UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT
M
E
NT
Equal opportunities to rms, workers and countries
TRADE POLICIES
FOR COMBATING
INEQUALITY
UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT
M
ENT
Equal opportunities to rms, workers and countries
TRADE POLICIES
FOR COMBATING
INEQUALITY
Geneva, 2019
ii
© 2019 United Nations
All rights reserved worldwide
Requests to reproduce excerpts or to photocopy should be addressed to the Copyright
Clearance Center at copyright.com.
All other queries on rights and licenses, including subsidiary rights, should be addressed
to: United Nations Publications, 300 East 42nd St, New York, NY 10017, United States
of America. Email: [email protected]; website: un.org/publications.
The ndings, interpretations, and conclusions expressed herein are those of the authors
and do not necessarily reect the views of the United Nations or its ofcials or Member
States.
This publication has not been formally edited.
United Nations publication issued by the United Nations Conference on Trade and
Development.
ISBN 978-92-1-112961-8
eISBN 978-92-1-004473-8
Sales No. E.19.II.D.21
UNCTAD/DITC/TAB/2019/6
iii
CONTENTS
Executive summary ................................................................................................. v
1. Introduction .................................................................................................. 1
2. Trade and inequality..................................................................................... 3
3. Trade and within-country income inequality ........................................... 13
4. Trade policies, market access and inequality ......................................... 29
5. A trade policy agenda to help reduce inequality ..................................... 39
5.1 Equal opportunities for rms............................................................... 39
5.2 Equal opportunities for workers .......................................................... 42
5.3 Equal opportunities for countries ........................................................ 43
6. Concluding remarks on policy orientation .............................................. 47
Blibliography .......................................................................................................... 48
iv
ACKNOWLEDGEMENTS
Bonapas Onguglo was the coordinator of this study. The main authors of the
study are Marcelo Olarreaga, Alessandro Nicita and Emanuel Milet. The authors have
beneted from substantive inputs received from Santiago Fernandez de Cordoba, Cecilia
Heuser, Ralf Peters and Miho Shirotori. This study also beneted from comments and
suggestions from: Lucas Assuncao, Nursel Aydiner-Avsar, Ebru Gokce-Dessemond,
Robert Hamwey, Ed Harris, Taisuke Ito, Ksenia Koloskova, Teresa Moreira, Graham Mott,
Carlos Razo, Mesut Saygili, Simonetta Zarrilli and Liping Zhang. Design and layout were
created by Jenifer Tacardon-Mercado.
v
EXECUTIVE SUMMARY
In the last four decades, international trade, along with nance and technology,
has been instrumental in the development process of many countries. Trade reforms
undertaken in developing countries have been accompanied by more rapid economic
growth, leading to a reduction in income gaps and lower levels of inequality between
countries. While the process of global trade integration has contributed to broad economic
gains at country levels and convergence between developed and developing countries,
yet it has also been accompanied by polarization in the distribution of income, sometimes
increasing within-country income inequality. The increase in within country inequality is
possibly a cause behind the current reaction against globalization, international trade and
the multilateral trading system.
Despite its impact on inequality, trade remains a catalyst for economic growth
and development. This is recognized in the 2030 agenda for sustainable development
and the sustainable development goals (SDGs). SDG 10 on reducing inequalities within
and among nations makes a limited but specic reference to the contribution of trade
in terms of the provision of special and differential treatment to developing countries by
way of the elimination of tariffs on imports of developing countries and least developed
countries. International trade has greatly beneted global citizens by increasing economic
efciency, consumers purchasing power and product varieties. Overall, international trade
has contributed to lift millions of people out of poverty and reduce inequality between
rich and poor nations. Therefore, while it may be tempting to conclude that in order
to reduce within country income inequality it is necessary to reverse trade integration
policies, this would be clearly wrong. Despite the adverse distributional consequences of
trade, resorting to protectionism is not a solution. In addition, there are many other drivers
of inequality within and between nations. For example, evidence shows that skill-biased
technological change has had a signicantly larger impact.
The effect of trade on inequality has not been the same everywhere. There is strong
evidence that the impact of international trade on inequality has been very different across
countries, and that context specic factors can exacerbate or alleviate the outcome.
Differences in outcomes provide compelling evidence that well thought national and
multilateral policies can mitigate negative effects of trade on within-country inequality or
even reduce inequality. To respond to inequality, rather than limiting trade, policymakers
need to focus on encouraging trade with trade policies and on ensuring that the benets
brought by international trade become more inclusive with complementary policies. This
vi
Trade Policies for Combating Inequality
report discusses the impact of international trade on inequality, and policy actions aimed
to make the benets brought by international trade more inclusive.
This report identies several factors why trade has contributed to reduce
between country and higher within country inequalities. The fragmentation of production
processes across countries, the uneven sharing of prots across value chains and the
rules governing market access and entry conditions, while greatly beneting some, have
also had negative impact on some workers, rms and countries. More in detail, the
fragmentation of the production processes across countries has contributed to rising
within country inequality in developing countries by increasing the wage gap between
the formal and informal sectors. In developed countries, it has increased inequality by
lowering blue-collar employment opportunities and reducing wages of unskilled workers
relative to skilled and white collars workers. In this regard, in general both in developing
and developed countries trade has provided a premium to workers at the top while
negatively affecting those at the bottom of the skill ladder.
A striking characteristic of the last few decades has been the increase of market
concentration. The gains from international trade have been too often captured by
larger rms, leaving micro and small enterprises with little benets from increased trade
opportunities. One reason for this is economies of scale and the high entry costs which
small rms need to pay to be competitive in world markets. Market concentration has
also resulted in higher mark-ups which create a bias towards producers and against
consumers, further increasing within country income inequality. Trade also inuences
inequality through market access and entry conditions. International trade is increasingly
regulated through non-tariff measures. Measures such as product requirements often
limit exports from countries that lack productive capacity, quality infrastructure and
conformity assessment opportunities. Subsidies and quotas affect international trade
in ways that are often detrimental to low-income countries. Such non-tariff measures
inuence international trade and can have profound effects on inequality, both within and
between countries.
There is much evidence that the effects of international trade are often highly
localized and long-lasting. That implies that trade integration process has often
exacerbated geographical inequality within countries. Because economic activity
within a country is often clustered geographically, international trade has contributed
to rising economic opportunities in some areas (e.g. areas with better infrastructure,
export processing zones, coastal zones etc.) while lowering opportunities in other areas
(e.g. rural areas or areas specialized in sectors subject to import competition). Lastly,
international trade has also affected inequality by promoting structural change. There is
strong evidence that, different from middle-income countries, international trade has often
resulted in low income countries specializing in the production of commodities and low
value-added goods. Such specialization into capital intensive sectors has often resulted
Equal opportunities to rms, workers and countries
vii
in little or no positive effect on unskilled wages and employment opportunities. Therefore,
trade integration has contributed to further exacerbated income inequalities within many
low-income countries.
In rethinking their approach to trade policy, policymakers need to confront new
global trade realities in a context of rising inequalities and progress towards attainment of
the SDGs. In the past, trade policymaking was largely driven by gaining market access and
targeting productivity. This was largely achieved, but often with the negative side effect of
rising within country inequality. In today’s context, the challenge faced by policymakers is
to make trade policy more inclusive, while not compromising on economic development
by reducing trade opportunities. Trade policy must balance the needs of businesses to
those of the society at large. The question of who benets and who loses from changes in
trade policy must be a rst-order concern, rather than an afterthought to be addressed by
complementary policies that are often not effectively implemented. In other words, trade
policy should not only pursue efciency gains but also consider the impact on smaller
rms, and marginalized workers, including women youth and less skilled.
Trade policy should consider and minimize negative impacts on marginalized
workers by seeking to improve labour rights and workers skills. There is evidence that
including labour rights in trade agreement will benet workers in developing countries. This
result is due to increases in worker productivity because of healthier work environments,
as well as more demand by global consumers for goods produced in accordance with
workers’ basic rights. The demand for better working conditions and fairer remuneration
of workers and agricultural producers can also be pursued by promoting the use of
private standards such as voluntary sustainability standards. Moreover, trade integration
strategies will be successful only if the labour force can meet the skills required by export
sectors. Education and training programs suited for increasing worker skills and worker
mobility from declining to expanding sectors are important. Specic chapters in trade
agreements to address gender conditions should become standard features of inclusive
trade policies.
Trade policy should consider and facilitate small rms’ integration in world markets.
Allowing micro, small and medium size to better compete in global markets should be part
of any package trying to make trade more inclusive. Smaller producers often have difculty
nding information about market access conditions and ways to comply with them on a
cost-effective basis. Therefore, it is important to make available up-to-date information to
smaller entrepreneurs on market access conditions such as tariff preferences and non-
tariff measures such as quotas, rules of origin and standards, as well as on the complex
processes linked to regulatory compliance. Better information is only part of the problem.
Small rms also face relatively higher costs of entering global markets. E-commence,
ICT services, and export promotion initiatives have great potential for levelling the playing
eld between small and large rms in accessing global markets. Well-implemented
viii
Trade Policies for Combating Inequality
export promotion programmes have been particularly efcient in supporting small rms
in entering export markets and small exporters in diversifying their product and market
portfolios. It is also necessary to enhance competition, both nationally and regionally,
with competition policies to help small rms benet from international trade. International
cooperation in competition law enforcement may be encouraged by introducing specic
clauses in the competition chapters of bilateral and regional trade agreements.
The role that multilateral cooperation on reducing global inequalities should also
be carefully considered. Multilateral trade cooperation should include safeguarding the
open, transparent and predictable multilateral trading system under the World Trade
Organization and ensuring that any reform process remains inclusive and equitable,
aligned with the SDGs. The principle of special and differential treatment and preferences
for developing countries, in particular least developed countries, should be expanded.
Moreover, multilateral cooperation is essential to prevent race to the bottom not only
regarding labour but also for corporate taxation. Multilateral cooperation facilitating
market access conditions both at and behind the border for such countries are relevant
to attenuating adjustment costs for rms and workers and to augmenting the capacities
of developing countries to produce, trade and compete.
Finally, a more inclusive trade policy agenda requires resources that may not
be readily available. Still, resources can be mobilized in three main ways. First, since
international trade has often resulted in an outcome where a few stakeholders receive
the overwhelming majority of benets from international trade, there is scope for many
governments to implement more progressive taxation and redistribution schemes.
Second, development assistance programs should not only aim to reduce inequality
between countries but also within countries. In this regard development assistance
should focus on increasing the productive, competitive and trade capacities of small and
micro enterprises. Finally, private sector engagement is essential. Corporate responsibility,
especially in relation to fair wages and tax avoidance schemes, could play an important
role reduce inequality outcomes.
1
1. INTRODUCTION
The 2030 Agenda for Sustainable Development seeks to eradicate poverty, increase
access to basic services, protect and preserve the environment, foster economic growth
and development, and ensure peace and stability in all countries through comprehensive
and integrated actions. Within this ambitious framework, Sustainable Development Goal
(SDG) 10 aims at reducing economic inequality within and between countries by targeting
more rapid income growth at the bottom of the income distribution, as well as more equal
opportunities and less unequal outcomes.
Until now, national and international efforts have integrated very few elements
from trade policy into packages aimed at meeting SDG 10 objectives. The only mention
to international trade in SDG 10 is to encourage the use of special and differential
treatment in favour of developing countries in the World Trade Organization (WTO),
1
which
nonetheless is an important principle and tool for facilitating the integration of developing
countries into the global trading system and world economy. While other instruments
that are mentioned in SDG 10, such as the elimination of discriminatory laws, scal and
wage policies, or international migration, no doubt have an important role to play in
helping reduce inequality, trade policy can also play a role beyond the use of preferential
treatment in the WTO. Indeed, this is highlighted by the articulation of the contribution of
trade to other SDGs such as in 1, 2, 3, 5, 8, 9, 14 and 17.
2
The ways to integrate trade
policy into policies, institutions and actions into ongoing efforts to reduce inequality are
the subject of analysis of this report.
This report is structured as follows. Chapter 2 assesses the connection between
trade policy reforms and between country inequality in the context of rapid integration of
developing countries into the global economy in the 1990s, and alongside the process of
globalization fuelled by trade, nance and technology. It shows that trade reforms have
contributed to reducing income inequality between countries, but they have also been
accompanied by a polarization of the distribution of income in the world, and in some
places with large increases in within-country income inequality. As a caveat, it is important
to stress that international trade and trade policy reforms are only part of the explanation.
A myriad of factors, benign and malign, affect global inequality including war, disease,
technology, education, and redistribution policies (Milanovic, 2016).
1
The WTO agreements allow for members to treat developing countries, and especially least developed countries
(LDCs), in a differential and more favourable way. The “special and differential treatment provisions” include: (i)
Provisions aimed at increasing the trade opportunities of developing country Members; (ii) Provisions under which
WTO Members should safeguard the interests of developing country Members; (iii) Flexibility of commitments, of
action, and use of policy instruments; (iv) Transitional time-periods; (v) Technical assistance; and (vi) Provisions
relating to LDC Members (see WTO, 2018a).
2
International trade, the multilateral trading system and WTO make important contributions to the achievement of
the SDGs (see WTO 2018b).
2
Trade Policies for Combating Inequality
Chapter 3 summarizes what has been learnt over the last two decades about the
relationship between trade and income inequality. Firstly, trade has indeed led to sizeable
increases in income inequality in many countries, but it is far from being the main driver
of it. Secondly, to reduce within country inequality what is needed is not necessarily
less but more trade, in order to give a larger number of workers access to the benets
offered by global markets. Third, inequality can be better addressed if trade reforms are
accompanied by non-trade adjustment and redistributive measures that address the
unintended, negative consequences of greater integration into world markets.
Chapter 4 examines the impact that different trade policy instruments and
institutions have had on between- and within-country income inequality. The discussion
covers tariffs and non-tariff measures as well as private standards. A key message from
this chapter is that non-tariff measures, even if set in a non-discriminating manner, tend
to discriminate against countries, especially developing countries with weaker production
and trade capacities. Non-tariff measures also act as formidable barriers for small rms
to enter global markets, which in turn tends to increase within-country income inequality.
Chapter 5 provides some thoughts regarding the role of trade, and related complementary
policies, in helping to combat inequality, and in boost the achievement of the sustainable
development goals generally. The discussion identies some of the most promising policy
actions and institutions that would improve opportunities to rms, workers and countries
to be beneciaries from global markets. Chapter 6 concludes.
In sum, two major policy conclusions emerge from this report. First, in a context
of rising inequalities, distributional effects of trade must be a rst-order concern. Trade
policy should not only pursue efciency gains but also consider its effects on small
rms and producers; marginalized workers, women and youth; and poorer countries.
Second, what is needed is not necessarily less trade but more inclusive trade. Within
this paradigm, several promising avenues can be considered to improve opportunities
to rms, workers and countries to be beneciaries from global markets and help reduce
inequalities between and within countries and peoples.
3
2. TRADE AND INEQUALITY
International trade plays an important role in explaining recent trends on income
inequality. The rapid integration of developing countries into world markets which began
in the 1990s through deepening process of globalization of trade, nance and technology
was accompanied by a signicant decline in income inequality. This decline was largely
driven by relatively higher economic growth in developing countries, and the consequence
decrease in the gap in income per capita between rich and poor nations (see Figure 1).
Decline in overall inequality started in the late 1990s, and reversed a trend of increasing
global inequality that goes all the way back to the 19
th
century (Bourguignon, 2016).
Figure 1: Global, between and within income inequality, Theil Index, (1990-2010)
Ϭ
Ϭ͘ϭ
Ϭ͘Ϯ
Ϭ͘ϯ
Ϭ͘ϰ
Ϭ͘ϱ
Ϭ͘ϲ
Ϭ͘ϳ
Ϭ͘ϴ
Ϭ͘ϵ
ϭ
ϭϵϵϬ
ϭϵϵϭ
ϭϵϵϮ
ϭϵϵϯ
ϭϵϵϰ
ϭϵϵϱ
ϭϵϵϲ
ϭϵϵϳ
ϭϵϵϴ
ϭϵϵϵ
ϮϬϬϬ
ϮϬϬϭ
ϮϬϬϮ
ϮϬϬϯ
ϮϬϬϰ
ϮϬϬϱ
ϮϬϬϲ
ϮϬϬϳ
ϮϬϬϴ
ϮϬϬϵ
ϮϬϭϬ
'ůŽďĂů ĞƚǁĞĞŶ tŝƚŚŝŶ
Source: Bourguignon (2016). The Theil index is a measure of economic inequality. Higher values mean greater
inequality. A Theil index of 0.5 means 74% of individuals own 26% of resources. In this gure, economic inequality
has declined between countries, but increased within each country on average.
Part of the explanation behind the relatively rapid economic growth of developing
countries is the role of multilateral and domestic policies in supporting trade integration.
Countries such as India, Brazil and China that had very restrictive trade policy in the early
1980s engaged in deep and rapid trade reforms. At the same time, the average rate
of protection of high-income countries, which were already relatively opened, remained
unchanged (see Figure 2). The decrease in protectionist policies contributed to the rapid
integration of many developing countries into world markets.
4
Trade Policies for Combating Inequality
Figure 2: Average tariffs in selected countries (1986 vs 1996)
Ϭ ϮϬϰϬϲϬϴϬϭϬϬ
/ŶĚŝĂ
ĂŶŐůĂĚĞƐŚ
ƌĂnjŝů
ĞŶŝŶ
ŐLJƉƚ
hƌƵŐƵĂLJ
<ĞŶLJĂ
ŚŝŶĂ
ĐƵĂĚŽƌ
ƌŐĞŶƚŝŶĂ
ŽŶŐŽ
dƵƌŬĞLJ
hŐĂŶĚĂ
DĞdžŝĐŽ
ŚŝůĞ
>ŽǁͲŝŶĐŽŵĞ
,ŝŐŚͲŝŶĐŽŵĞ
ϭϵϵϲ ϭϵϴϲ
Source: UNCTAD’s Trains database. Reported tariffs are averages of Most-Favoured Nation (MFN) tariffs. MFN
tariffs refer to non-preferential import tariffs applied to other WTO members. Between 1986 and 1996, the average
tariff applied by low-income countries declined from 30% to 18%.
The recent pattern of global economic convergence is illustrated in gure 3 which
shows the relationship between GDP growth and initial GDP per capita before and after
2000, when trade reforms accelerated in low-income countries. Prior to 2000 economic
growth was not substantially different across countries. If anything, richer countries rate
of economic growth was slightly higher than the average. On the other hand, with the
beginning of the globalization period (around 2000), the relationship between initial GDP
per capita and GDP growth becomes negative, as shown in panel b of Figure 3 for the
period 2000-2017. This suggests that the economic integration of low-income countries
was accompanied by relatively higher growth rates, leading to income convergence
across countries.
One problem with measuring income inequality with the Theil index, Gini coefcient,
or with relative income per capita growth, is that they summarize changes in the entire
income distribution, without providing much details. For example, a decline in inequality
measured by the Gini coefcient can be perfectly consistent with poor individuals
becoming poorer, if this is balanced by a more equal income distribution between high
and middle-income individuals. An alternative way of looking at inequality trends is to
explore changes along the entire income distribution. This method for visualizing the
evolution of global inequality was made popular by Lakner and Milanovic (2016) with
the “elephant chart”. Figure 4 reproduces this chart using data from the World Inequality
Equal opportunities to rms, workers and countries
5
Report (2018). The horizontal axis ranks the world’s population by their level of income
(from the poorest individual to the richest). The vertical axis provides the income growth
experienced by each income percentile between 1980 and 2016. The distribution of top
percentile is more nely detailed to illustrate the strong income inequality at the very top
of the income distribution. Income gains of the bottom 10 percent of global population
are not reported because lack of reliable data.
Figure 3: Economic convergence before and after 2000
(a) 1970-2000
ͲϯϬ
ͲϮϬ
ͲϭϬ
Ϭ
ϭϬ
ϮϬ
ϯϬ
ϰϬ
ϱϬ
ϰϲϴϭϬϭϮ
ǀĞƌĂŐĞ'WŐƌŽǁƚŚƌĂƚĞ͗ϭϵϳϬͲϮϬϬϬ
>ŽŐ'WƉĞƌĐĂƉŝƚĂ;ϮϬϬϬͿ
ĂƐƚƐŝĂ͕^ŽƵƚŚƐŝĂĂŶĚWĂĐŝĨŝĐ ƵƌŽƉĞĂŶĚĞŶƚƌĂůƐŝĂ >ĂƚŝŶŵĞƌŝĐĂĂŶĚĂƌŝďďĞĂŶ
DŝĚĚůĞĂƐƚĂŶĚEŽƌƚŚĨƌŝĐĂ EŽƌƚŚŵĞƌŝĐĂ ^ƵďͲ^ĂŚĂƌĂŶĨƌŝĐĂ
(b) 2000-2017
Ͳϱ
Ϭ
ϱ
ϭϬ
ϭϱ
ϮϬ
Ϯϱ
ϯϬ
ϯϱ
ϰϲϴϭϬϭϮ
ǀĞƌĂŐĞ'WŐƌŽǁƚŚƌĂƚĞ͗ϮϬϬϬͲϮϬϭϳ
>ŽŐ'WƉĞƌĐĂƉŝƚĂ;ϮϬϬϬͿ
ĂƐƚƐŝĂ͕^ŽƵƚŚƐŝĂĂŶĚWĂĐŝĨŝĐ ƵƌŽƉĞĂŶĚĞŶƚƌĂůƐŝĂ >ĂƚŝŶŵĞƌŝĐĂĂŶĚĂƌŝďďĞĂŶ
DŝĚĚůĞĂƐƚĂŶĚEŽƌƚŚĨƌŝĐĂ EŽƌƚŚŵĞƌŝĐĂ ^ƵďͲ^ĂŚĂƌĂŶĨƌŝĐĂ
6
Trade Policies for Combating Inequality
Figure 4: Changes in income across global citizens: Elephant curve 1980-2016
Ϭ
ϱϬ
ϭϬϬ
ϭϱϬ
ϮϬϬ
ϮϱϬ
ϭϬ ϮϬ ϯϬ ϰϬ ϱϬ ϲϬ ϳϬ ϴϬ ϵϬ ϵϵ͘ϭ ϵϵ͘ϵϮ ϵϵ͘ϵϵϯ
ZĞĂůŝŶĐŽŵĞŐƌŽǁƚŚƉĞƌĂĚƵůƚ;ƉĞƌĐĞŶƚͿ
/ŶĐŽŵĞŐƌŽƵƉ;ĐĞŶƚŝůĞͿ
Source: From Figure E4 from the World Inequality Report (2018).
The message from Figure 4 is richer and more complex than that suggested by
growing economic convergence or by the decline in inequality indices observed since
the 1990s. Three stylized facts emerge. First, the poorest half of the world population
has seen its income increase over the past three decades. This is generally explained
by the rapid growth in emerging economies. Second, the global upper middle class
(from 50 to 95 percentile) however has seen its income stagnate, which reects the fact
that the middle class in developed countries and economies in transitions has seen little
income growth over the last twenty years. Finally, the global elite, those at the top of the
income distribution, have experienced far greater income growth. By combining these
three factors, it can be seen that the decline in global income inequality is explained by
the rise of the middle classes in developing countries (although it should be noted that
this rise in income of the middle classes is largely centred in the emerging economies
and that it has not been adequate to also boost the income level of the poorest) . This
is accompanied by a strong polarization at the top of the income distribution with those
at the very top experiencing very rapid increases in income, while global middle-class
individuals experienced very slow income growth.
The discussion so far has been on the evolution of what is known as relative
inequality (Ravallion, 2018b), which focuses on changes in percentage terms. A
complementary measure is absolute inequality, which measures the absolute difference
in incomes between individuals. The difference between absolute and relative measures
of inequality is important and can provide more insights on the evolution of income
inequality. For instance, if the incomes of every individual were to double, then relative
income inequality would remain unchanged. On the other hand, when all incomes double,
the absolute increase in income (in monetary terms) is larger for individuals with high
Equal opportunities to rms, workers and countries
7
incomes. Thus, the same changes in income can lead to different conclusions regarding
the evolution of income inequality depending on whether absolute or relative inequality is
being measured.
A striking characteristic over the last 40 years has been a decline of relative global
income inequality accompanied by an increase in absolute global income inequality.
Figure 5 reproduces the result of Niño-Zarazúa et al. (2017) which shows that between
1970 and 2010, relative income inequality as measured by the Gini coefcient declined
by 13 per cent, while absolute inequality increased by more than 50 per cent. Notably,
this occurred as low-income countries were rapidly integrating into world markets and
experiencing faster growth.
Figure 5: Relative and Absolute Global Inequality (1975-2010)
ϯϱϬϬ
ϰϱϬϬ
ϱϱϬϬ
ϲϱϬϬ
ϳϱϬϬ
Ϭ͘ϲϮ
Ϭ͘ϲϰ
Ϭ͘ϲϲ
Ϭ͘ϲϴ
Ϭ͘ϳ
Ϭ͘ϳϮ
Ϭ͘ϳϰ
ϭϵϳϱ ϭϵϴϱ ϭϵϵϱ ϮϬϬϬ ϮϬϬϱ ϮϬϭϬ
ZĞůĂƚŝǀĞ'ŝŶŝ;ůĞĨƚĂdžŝƐͿ ďƐŽůƵƚĞ'ŝŶŝ;ƌŝŐŚƚĂdžŝƐͿ
Source: Zarazúa et al.(2017). The relative gini coefcient is a measure of income inequality. It ranges from 0 to
1, with 1 being perfect inequality in income distribution. Absolute Gini focus on absolute differences in income.
Relative Gini is measured on the left axis, and absolute Gini on the right axis.
Figure 5 complements the nding of Figure 4, but also suggests that absolute
inequality accelerated after 2000. Again, this has been the result of income growth being
increasingly and disproportionally captured by high income individuals. To summarize, at
the global level relative inequality has declined, however within country relative inequality
substantially increased. It is the increase of within country inequality that has grabbed
the headlines in policy debates in high-income countries. This in turn has fuelled anti-
globalization sentiment. Much less attention has been given to the role of globalization
in the decline in global relative inequality. Two reasons can explain this focus on within-
country inequality. First, the public is arguably more concerned by national issues. Second,
the average increase in inequality within countries hides large heterogeneity. Relative and
8
Trade Policies for Combating Inequality
absolute inequality has increased quite rapidly in many high-income countries; less so in
developing countries.
Figure 6: Top 10 per cent income shares in selected regions and countries
(1990-2016)
ϲϲ
ϲϭ
ϯϵ
ϰϳ
ϯϰ
ϯϳ
ϱϱ
ϱϰ
ϯϬ
ϰϬ
ϱϬ
ϲϬ
ϳϬ
ϭϵϵϬ ϭϵϵϱ ϮϬϬϬ ϮϬϬϱ ϮϬϭϬ ϮϬϭϱ
dŽƉϭϬйŝŶĐŽŵĞƐŚĂƌĞƐ
DŝĚĚůĞĂƐƚĂŶĚEŽƌƚŚĨƌŝĐĂ EŽƌƚŚŵĞƌŝĐĂ
ƵƌŽƉĞ ^ƵďͲ^ĂŚĂƌĂŶĨƌŝĐĂ
ϱϴ
ϯϬ
ϰϭ
ϯϯ
ϱϱ
Ϯϰ
ϰϲ
ϮϬ
ϯϬ
ϰϬ
ϱϬ
ϲϬ
ϭϵϵϬ ϭϵϵϱ ϮϬϬϬ ϮϬϬϱ ϮϬϭϬ ϮϬϭϱ
dŽƉϭϬйŝŶĐŽŵĞƐŚĂƌĞƐ
ƌĂnjŝů ŚŝŶĂ /ŶĚŝĂ ZƵƐƐŝĂ
Source: World Inequality Report (2018). The gure represents the evolution of the income share held by the 10 per
cent richest individuals over the period 1990-2016.
Figures 6 shows the evolution of the share of national income held by the top
10 per cent in selected regions and countries (left and right panels respectively). Data
is taken from the World Inequality Report (2018). Over the last three decades, the share
of the top 10 per cent has signicantly increased in North America and there has been
some more modest increases in Europe. The share of national income held by the top
10 per cent has not changed in Sub-Saharan Africa and has modestly declined in North
African and Middle-Eastern countries. In China and India, the share of income held by the
top 10 per cent of individuals increased gradually over the period to reach 41 and 55 per
cent respectively by 2016. Not much change is observed in Brazil, where the top 10 per
Equal opportunities to rms, workers and countries
9
cent still accounts for more than half of total income in 2016. In the Russia Federation,
inequality increased drastically after the collapse of the Soviet bloc, and remained at
around 46 per cent since then.
Figure 7: Gender wage gap (1996-2012)
͘ϭ
͘Ϯ
͘ϯ
͘ϰ
͘ϱ
ϭϵϵϱ ϭϵϵϳ ϭϵϵϵ ϮϬϬϭ ϮϬϬϯ ϮϬϬϱ ϮϬϬϳ ϮϬϬϵ ϮϬϭϭ
ǀĞƌĂŐĞĐŚĂŶŐĞŝŶƚŚĞŐĞŶĚĞƌǁĂŐĞŐĂƉ;/ϮϮĞƐƚ͘Ϳ
ůůĐŽƵŶƚƌŝĞƐ
Ϭ
Ϭ͘ϭ
Ϭ͘Ϯ
Ϭ͘ϯ
Ϭ͘ϰ
Ϭ͘ϱ
ϭϵϵϬ ϭϵϵϱ ϮϬϬϬ ϮϬϬϱ ϮϬϭϬ ϮϬϭϱ
'ĞŶĚĞƌŐĂƉ;ŝŶƉĞƌĐĞŶƚͿ
ƚŚŝŽƉŝĂ ,ŽŶĚƵƌĂƐ ^ƌŝ>ĂŶŬĂ sŝĞƚEĂŵ
Source: Authors estimates using the World Bank I2D2 database. Estimates on the left hand-side gure are obtained
by regressing the log monthly wage on a set of year dummies. It reports the average change in gender gap across
all countries. Regressions are weighted using the number of workers in each country. Results show there hasn’t
been any signicant change in the gender gap over the period 1994-2012. The right hand-side gure represents
the gender gap in selected countries over the same period.
The evolution of other measures of inequality also shows signicant heterogeneity
during this period. For example, at the global level, the gender wage gap (average
wage difference between men and women) was relatively stable at around 25 per cent
between 1996 and 2012, according to our estimates reported in the left panel of Figure
7. However, this hides heterogeneity in the evolution across countries as shown in the
right panel of Figure 7. The available data also fail to reveal any clear correlation between
10
Trade Policies for Combating Inequality
income inequality or the gender wage gap and openness to trade, as measured by the
ratio of exports over GDP (Figure 8).
Figure 8: Trade openness versus income and gender inequality
Ϭ
Ϭ͘Ϯ
Ϭ͘ϰ
Ϭ͘ϲ
Ϭ͘ϴ
ϮϬ ϰϬ ϲϬ ϴϬ ϭϬϬ
džƉŽƌƚƐͬ'W
'ŝŶŝ;/ϮϮĞƐƚ͘Ϳ
>ŽǁŝŶĐŽŵĞ >ŽǁĞƌͲŵŝĚĚůĞŝŶĐŽŵĞ hƉƉĞƌͲŵŝĚĚůĞŝŶĐŽŵĞ
Ϭ
Ϭ͘Ϯ
Ϭ͘ϰ
Ϭ͘ϲ
Ϭ͘ϴ
ͲϬ͘Ϯ ͲϬ͘ϭ Ϭ Ϭ͘ϭ Ϭ͘Ϯ Ϭ͘ϯ Ϭ͘ϰ Ϭ͘ϱ Ϭ͘ϲ Ϭ͘ϳ Ϭ͘ϴ
džƉŽƌƚƐͬ'W
'ĞŶĚĞƌǁĂŐĞŐĂƉ
>ŽǁŝŶĐŽŵĞ >ŽǁĞƌͲŵŝĚĚůĞŝŶĐŽŵĞ hƉƉĞƌͲŵŝĚĚůĞŝŶĐŽŵĞ
Source: Authors estimates based on World Bank I2D2 database using average export/GDP, average Gini and
gender wage gap over available years. Both gures show there is no clear pattern between the ratio of export over
GDP and income inequality (as measured by the Gini) and the gender wage gap.
To summarise, relatively rapid trade reforms in some poorer countries have resulted
in more rapid growth, leading to a reduction in the income gap between rich and poor
countries. This has contributed to the decline in global relative income inequality observed
since the 1990s. However, the overall reduction in relative income inequality since the
Equal opportunities to rms, workers and countries
11
1990s hides the fact that within country inequality has rapidly increased, especially after
the 1990s.
A word of caution is necessary before concluding this chapter. It would not be
appropriate to attribute any of these changes in between- or within-country income or
gender wage inequality exclusively to trade reforms or integration into world markets.
Ravallion (2018a) for example argues than an important share of the reduction in
between country inequality is driven by factors other than trade, including redistributive,
macroeconomic, scal and labour market policies. Technological change is another major
factor behind the recent inequality trends. Also, Milanovic (2016) provides some broader
factors affecting inequality in the era of globalization. Trade and trade policy reforms are
only part of the explanation.
Similar arguments can be made in relation to the role of international trade in the
evolution of income inequality within countries. The redistributive effects of international
trade and trade policies were recognized long ago, the mechanisms were not properly
understood. Recent analytical methods and availability data have allowed to pin-down
more precisely the contribution that international trade and trade policy reforms have
had on the evolution of inequality within each country. The next chapter summarizes the
lessons that have been learnt over the last two decades about the relationship between
trade and within-country income inequality.
13
3. TRADE AND WITHIN-COUNTRY INCOME
INEQUALITY
Until recently the economic literature had difculties reconciling the empirical
evidence of the increase in income inequality with the opening of the global economy
(Wood, 1994). During the 1990s the economic literature indicated that not trade, but
something else must have been driving changes in income inequality. The focus turned to
skill-biased technological progress. It is only in the last decade that new trade models that
allow for worker and rm heterogeneity provided mechanisms through which international
trade can affect within country inequality that are consistent with empirical observation.
The fact that micro level datasets became available allowed researchers to estimate and
test these models providing some robust insights of the relationship between trade and
within country income inequality.
In the 1990s trade economists expected the integration of low-income countries
in the global economy to lead to a reduction in within country income inequality. According
to the redistributive predictions of the Heckscher-Ohlin model, countries specialize
according to their comparative advantage. As low-income countries have a comparative
advantage in the supply of unskilled labour, trade should provide these workers with
additional opportunities. This in turn leads to an increase in the relative wage of unskilled
workers, which should lead to a reduction in income inequality.
The prediction of lower inequality in low-income countries, however, sits poorly with
the experience of low-income countries that integrated into the global economy (Wood,
1994, 2002). Indeed, as discussed in the previous chapter, many developing countries,
such as China and India, which were unskilled labour-abundant, have experienced an
increase in income inequality over the recent decades. In Latin America there was also
an increase in income inequality in many countries at the time when they opened their
markets to international trade (see Argentina or the Bolivarian Republic of Venezuela in
Figure 9). And many other countries did not experience any signicant change in income
inequality because of trade integration. These patterns cannot be explained by classic
trade models, which would predict labour benetting more than capital from trade reforms
in these labour-abundant countries, leading to reductions in income inequality.
14
Trade Policies for Combating Inequality
Figure 9: Income inequality before and after trade liberalization – selected
countries
ϰϬ
ϰϱ
ϱϬ
ϱϱ
ϲϬ
ϲϱ
ͲϭϬ Ͳϱ Ϭ ϱ ϭϬ
'ŝŶŝ;tŽƌůĚĂŶŬĞƐƚ͘Ϳ
zĞĂƌƐƐŝŶĐĞƚƌĂĚĞůŝďĞƌĂůŝnjĂƚŝŽŶ
ƌŐĞŶƚŝŶĂ ƌĂnjŝů ĐƵĂĚŽƌ WĂŶĂŵĂ ŽůŝǀĂƌŝĂŶZĞƉ͘ŽĨsĞŶĞnjƵĞůĂ
Ϯϱ
ϯϬ
ϯϱ
ϰϬ
ϰϱ
ͲϭϬ Ͳϱ Ϭ ϱ ϭϬ
'ŝŶŝ;tŽƌůĚĂŶŬĞƐƚ͘Ϳ
zĞĂƌƐƐŝŶĐĞƚƌĂĚĞůŝďĞƌĂůŝnjĂƚŝŽŶ
ĂŶŐůĂĚĞƐŚ ŽƚĞĚΖ/ǀŽŝƌĞ ŐLJƉƚ WĂŬŝƐƚĂŶ
Source: World Bank’s World Development Indicators for Gini indices and Wacziarg and Welch (2008) for the year
of trade liberalization in each country.
This apparent conict between economic models and empirical data has two
implications. Firstly, other factors (skilled biased technological progress for instance) were
the main forces driving income inequality, and secondly, the trade models that were used
were not an adequate reection of the world. If trade models fail to explain the increase
in national inequality observed in most countries as low-income countries integrated into
world markets, then technological progress may be the force behind raising national
inequality. For technological progress to explain increases in income inequality, it needs
Equal opportunities to rms, workers and countries
15
to be biased in favour of skilled workers or capital (Acemoglu, 2002). The fact that skilled
labour wages have increased as the relative supply of skilled labour also increased in
most countries tends to suggest that skilled biased technological progress has been
driving these changes.
3
Indeed, Autor, Levy and Murnane (2003) provide strong evidence
of the complementarity between technological progress and skilled workers. They split
jobs into those requiring “routine” (manual or unskilled) and “non-routine” (analytical or
skilled) tasks and show that there has been a rapid increase in the share of “non-routine”
tasks starting in the 1970s. This shift was stronger in sectors that were adopting new
technologies more rapidly, suggesting that technological progress was substituting for
“routine” tasks, and therefore contributing to the increase in income inequality. Burstein,
Morales and Vogel (2016) show that over the period 1984-2003 in the United States
of America, the complementarities between skilled workers and technology led to an
increase in relative demand for skilled workers that more than compensated the increase
in their relative supply. This explains the observed simultaneous increase in employment
and wages for skilled workers in the United States.
The second implication of classic trade models not being able to explain the
evolution of national inequality in low-income countries is that these trade models are
too simple to explain the real world. A rst step towards allowing trade models to provide
a more accurate description of the world involved moving beyond the two factors of
production model (labour and capital, or skilled and unskilled labour) as a determinant
of each country’s comparative advantage. An important neglected factor of production
when it comes to explaining many low-income countries comparative advantage is natural
resources. Indeed, a large number of low-income countries may not have a comparative
advantage in labour-intensive sectors but in natural resource abundant sectors. Thus,
when countries open to trade it is the demand for natural resources and therefore their
price that increases. Whether wages also increase relative to the price of capital will
depend on the substitutability and complementarities between labour, capital and natural
resources.
The Leamer Triangle allows us to visualize the location of each country in terms of
labour, capital and natural resources abundance. It is shown in Figure 10 for a selected
number of countries and regions. Developed and high-income countries are often capital
abundant and therefore capital owners beneted more from international trade, which
tended to increase income inequality. More interestingly, many low-income countries were
abundant in natural resources and owners of these resources benetted from integration
into world markets. If owners of natural resources were located at the top of the income
distribution in these countries, then national inequality would increase. Moreover, in the
presence of complementarities in production between natural resources and skilled
3
Note that technological change need not be biased in favour of skilled workers. Luo (2017) shows that as Europe
was experiencing signicant technological progress during the 500 years before the First World War, the wage gap
between skilled and unskilled workers declined by more than 50 percent.
16
Trade Policies for Combating Inequality
workers or capital, the bias towards rich individuals associated with the integration of
low-income countries to world markets would only exacerbate the issue.
4
Allowing for
more factors of production can help explain increases in income inequality both in high
and low-income countries as the latter integrate into world markets.
Figure 10: Factor abundance in a three-factor country model: the Leamer
triangle in 2000
OECD
ARG
MEX
BRA
SAS
IND
CHN EAS
SSA
ECA
COL
MENA
VEN
CHL
URY
GTM
GUY
ECU
CRI
TTO
Source: Perry and Olarreaga (2007). Unskilled labour is obtained from the Barro and Lee dataset assuming that
unskilled or raw labour is given by the labour force with up to secondary education completed. Capital is obtained
using the perpetual inventory method from World Development Indicators data (qualitative similar results are
obtained using skilled labour calculated using the Barro and Lee dataset). Natural Resources are proxied by net
exports of products intensive in natural resources. It is transformed into a positive number by taking the squared
root of the exponential of net exports. All endowments are then normalized to be between 0 and 1. Countries in
the top corner of the triangle (Chile, Uruguay, and Costa Rica) are abundant in natural resources and scarce in
unskilled labour and capital. Countries in the bottom left corner (India for instance) are abundant in unskilled labour
and scarce in natural resources and capital. OECD countries appear abundant in capital and scarce in unskilled
labour and natural resources. SSA: Sub-Sahara Africa; MENA: Middle-East and North Africa; EAS: East Asia and
Pacic; SAS: South Asia.
Offshoring models that allow for the fragmentation of production across countries
into different tasks provide an alternative explanation for why as low-income countries
integrated into world markets, inequality increased in low and high-income countries.
Feenstra and Hanson (1996) developed an offshoring model that provides such a result
4
Another reconciliation of early trade models with empirical observation regarding the impact of trade on within
country inequality in unskilled-labour abundant countries is the specic-factor model (see Jones, 1991). Factors of
production are assumed immobile across sectors (and that is why it is often seen as a model that captures short or
medium-run effects). If owners of factors of production that are specic to export-competing sectors are at the top
of the income distribution, then opening up to trade naturally leads to an increase in returns to those factors that
are specic to the export-competing sector, and therefore an increase in the share of the top incomes.
Natural Resources
Unskilled Labour Capital
Equal opportunities to rms, workers and countries
17
within the classic trade framework. Instead of thinking in terms of sectors, they think of
production as involving a continuum of tasks. Some of the tasks can be offshored to other
countries, depending on the relative cost of these tasks in different countries, and on a
trade cost as the product of the offshored tasks needs to be imported back. Given that
low-income countries tend to be relatively abundant in unskilled labour, the cost of tasks
requiring unskilled workers will be relatively cheaper there. Hence, unskilled-intensive
tasks will be offshored to low-income countries that will specialize in the production of
these tasks. High-income countries, on the other hand, will be the ones producing the
skilled-intensive tasks.
When trade costs fall between high and low-income countries, there are stronger
incentives to offshore more unskilled-intensive tasks from high to low-income countries.
These newly offshored tasks are the least skill-intensive of the tasks performed in high-
income countries. As these relatively unskilled-intensive tasks get offshored, the demand
for unskilled workers in high-income countries falls, which leads to a decline in unskilled
wages, and therefore an increase in income inequality in high-income countries. More
surprisingly, and contrary to the prediction of the Heckscher-Ohlin model, this will also
increase inequality in low-income countries. The reason is that the offshored task, which
is the least skill-intensive task from the point of view of the high-income country, is also
the most skilled-intensive task in the low-income country. Thus, the relative demand for
skilled workers also increases in the low-income country leading to an increase in income
inequality there as well. Feenstra and Hanson (1997, 1999) showed that offshoring from
the United States to Mexico can explain up to 25 per cent of the increase in relative
wages of skilled workers in the United States, and up to half of the increase in the relative
wage of skilled workers in Mexico during the 1980s.
It is also important to note that unskilled workers may not necessarily lose
from the offshoring of tasks in high-income countries if productivity gains are allowed.
Grossman and Rossi-Hansberg (2008) showed that if productivity gains associated with
the offshoring of some tasks are large enough, then rms will likely expand and increase
its demand for both types of labour, including low-skilled workers. Whether productivity
gains reect into a decline in inequality depends on whether such gains are captured by
labour through higher wages. Estimates by Wright (2014) of the impact of United States
offshoring to China on the wage of unskilled workers in the United States suggest that
the increase in wages dues to productivity effect does not fully compensate the decline
in wages due to lower labour demand , but only reduces its impact by more than two
thirds. Overall, offshoring to China is found to be a net loss for unskilled workers in the
United States.
The recent availability of more detailed rm- and worker-level dataset has allowed
uncovering new facts that tend to be at odds with standard trade model predictions
that as countries open up to trade one should observe a reallocation of workers from
18
Trade Policies for Combating Inequality
import-competing to export-oriented industries. Recent empirical evidence suggests
that following a trade shock (such as a reduction in import tariffs), worker reallocation
occurs mainly within industries, from low- to high-productivity rms (Pavcnik, 2002). The
predictions of the classic model are also at odds with the observation that most of the
increase in the wage skill premium observed in the United States in the 1980s and early
1990s also occurred within industries and between rms (Bernard and Jansen, 1997).
A reason for this is that many workers have moved within industries to exporting rms,
where the skill premium is higher. This of course would have an impact on wage inequality
that cannot be explained in classic trade models.
The introduction of rm and worker heterogeneity into trade models provides
a solution to this puzzle. Recognizing that there are differences in productivity within
industries and that worker characteristics also widely vary was indeed a necessary step
to reconcile theory with empirical evidence. Melitz (2003) provides the basic framework
to understand the reallocation of resources across rms and within industries following a
trade shock. Because participation in world markets requires paying xed costs associated
with marketing, information and logistics in foreign markets, only the most productive
rms are able to participate in world markets, leaving smaller and less productive rms
outside world markets. Through the reallocation of resources from low to high-productive
rms, trade liberalization leads to increases in average productivity.
Note that because in Melitz initial framework workers are identical and can move
freely across rms, they all receive the same wage. The model therefore has nothing to
say regarding wage inequality. Differences in income inequality could only be explained by
differences in prots across different rms. Owners of more productive rms will see their
prots increase as their rms improve their access to international markets, while owners
of less productive rms will see their prots decline or even fully vanish if their rms are
forced out of the market by the tougher competition brought on by trade liberalization.
For wage inequality to emerge in models with heterogeneous rms, either labour
market frictions or worker heterogeneity are needed. Egger and Kreickemeier (2009)
are the rst to introduce labour market frictions into a trade model with heterogeneous
rms. Workers have fair-wage preferences as in Akerloff and Yellen (2000), meaning that
employees of more productive rms expect to be paid higher wages if they are to provide
a full effort. This introduces both differences in wages for ex-ante identical workers, as
well as unemployment as fair wages are higher than the equilibrium wage. They nd
that the move from autarky (absence of trade) to trade increases welfare and raises the
average prot of exporting rms as in Melitz (2003), but also leads to increases in wage
inequality. The reason for the latter is precisely that the average prot of exporting rms
increases relatively to those that sell only in the domestic market. In the presence of fair
wages, this increase in the dispersion of prots across rms will be linked to an increase
in the dispersion of wages across rms leading to increases in wage inequality.
Equal opportunities to rms, workers and countries
19
Differences in wages, depending on whether a worker is employed at an exporting
rm or not, may also affect the impact of trade on wage inequality. Baumgartner (2013)
uses employer-employee matched data for the German manufacturing sector and shows
that part of the increase in wage inequality observed in Germany between 2006 and
2007 can be explained by the increase in wages paid by exporting rms within sectors
and within skills relative to non-exporting rms. Egger and Kreickemeier (2012) introduce
worker heterogeneity into a setup with two different types of workers: production workers
and managers. The previous results of Egger and Kreickemeier (2009) are unchanged,
but there is now an increase in wage inequality between managers and production
workers following the opening of the economy to international trade. The reason is that
the increase in prots of exporting rms fully translates to the wage of managers (who do
not have fair wage preferences by assumption) whereas it only is imperfectly transmitted
to production workers due to the fair-wage setup. Egger, Egger and Kreickemeier (2013)
provide a quantication of the impact of opening to trade on wage inequality in a similar
setup. The move from autarky to the observed level of trade openness in ve European
countries leads on average to an 8 per cent increase in wage inequality. Thus, while the
impact of trade on wage inequality within European countries can be sizeable (22 per
cent in Bosnia and Herzegovina), the quantication efforts suggest they can only explain
a small part of the observed increases in these countries.
Felbermayr et al. (2018) reach the same conclusion for Germany. They show that
the increase in inequality in Germany occurs essentially within sectors and that it can be
explained by tougher competition observed at the sector level, but only a small part is due
to trade. This echoes again the work by Ravallion (2018a) showing that not all change
observed in inequality should be attributed to trade or trade reforms.
Another quantication exercise by Burstein and Vogel (2017) for more than 30
countries also reaches the same conclusion. As before, rms vary according to their
productivity and workers can be low- or high-skilled. What is new in their setup is that
high-productive rms tend to hire relatively more skilled workers. Thus, as countries open
up to trade and more productive rms become larger, there is an increase in the demand
for skilled workers in all countries, which leads to an increase in the skill premium and
in wage inequality in all countries. However, their model can only explain an average
increase of 5 per cent in the wage skill premium following a move from autarky to the
observed levels of trade. The largest increase is observed in Lithuania with a 12 per cent
increase in the skill premium. These are sizeable impacts, but not large enough to explain
the rapid increases in wage inequality in many countries.
An alternative explanation for observing increases in the skilled-unskilled wage gap
at the time of trade liberalization is provided by Bas and Paunov (2019) who examined the
impact on skilled and unskilled wages when Ecuador joined the WTO in 1996. They argue
that the reduction in tariffs on inputs allows for imports of more sophisticated goods,
20
Trade Policies for Combating Inequality
which increases the quality of output and requires a more skilled work force. According to
their estimates a 1 per cent reduction in tariffs on inputs, leads to a 0.5 per cent increase
in the skilled-unskilled wage gap.
Kinuthia and Manda (2019) provide evidence for Kenya that rm participation
in export markets results in a larger skilled-unskilled wage gap and therefore higher
inequality. They show that exporting rms pay higher wages to tertiary and secondary
educated workers, but workers with primary education or less do not receive higher
wages in exporting rms. The differences in wages are quite large, with secondary
educated workers getting 12 per cent higher wages in exporting rms and tertiary
educated workers getting 70 per cent higher wages in exporting rms. However, the
increase in wage inequality associated with exporting rms paying higher wages for
secondary and tertiary education workers is less than 2 per cent.
A potential explanation for the increase in the wage gap between skilled and
unskilled workers in Kenya associated with rm participation in export markets is provided
in Kinuthia and Olarreaga (2019). They show that rm participation in international markets
reduces the bargaining power of labour unions within rms, which then results in lower
wages. They provide evidence for Kenya showing that exporting rms with a large share
of unionized workers tend to pay lower wages than non-exporting rms with a large share
of unionized workers. The result is fully explained by the impact of being an export rms
on production workers’ wages. Thus, the competitive pressure of larger international
markets results in lower, not higher wages, for unskilled (or production) workers, due to
the reduction in the strength of labour unions.
Introducing search frictions in the labour market instead of “fair-wages” and/or
heterogeneous workers into a Melitz setup, Helpman et al. (2010) nd that the relationship
between trade and inequality exhibits an inverted-U shape. Like in the previous papers,
as countries open to trade, income inequality increases. The difference is that after a
certain trade liberalization threshold, as countries continue to open to trade, inequality
starts declining. The reason is that initially only the largest, more productive rms that pay
higher wages benet from the move towards freer trade. The less productive rms cannot
afford the xed costs of exporting and are therefore reduced to selling only in the domestic
market or exit all together. This implies that the already larger and more productive rms,
which were paying higher wages, end up paying even higher wages as they have access
to a larger international market. This leads to an increase in wage inequality. However, as
trade costs keep declining, smaller rms are able to engage in world markets and benet
from better market access. Having access to world markets leads them to expand and to
increase their demand for all workers. This in turn reduces income inequality by reducing
the wage gap across rms. The logic is very similar to the one of the dual economies with
rural and urban markets and their effect on inequality (Kuznets, 1955). Initially, reductions
in trade costs offer new opportunities to larger rms only and this increases inequality. As
Equal opportunities to rms, workers and countries
21
all rms become exporters and have access to the same world market, inequality tends
to decline (see Figure 11).
Figure 11: Within country inequality and share of rms exporting
^ŚĂƌĞŽĨĞŵƉůŽLJŵĞŶƚ ŝŶ
ĞdžƉŽƌƚŝŶŐ ĨŝƌŵƐ
tŝƚŚŝŶ
ĐŽƵŶƚƌLJ
ŝŶĞƋƵĂůŝƚLJ
ϳϬй
ĞƐƚŝŵĂƚĞ ĨŽƌ
ƌĂnjŝů
ϱϮй
ŽďƐĞƌǀĞĚ ŝŶ
ƌĂnjŝů
Source: Helpman, Itskhoki, Muendler and Redding, 2017.
Helpman et al. (2017) provide evidence for Brazil. According to their estimates, the
move from autarky to the observed level of trade in Brazil led to a 7.5 per cent increase in
wage inequality. More interestingly further reductions in trade costs will lead to increases
in wage inequality until the share of employment in Brazilian exporting rms reaches 70
per cent. The observed share of employment in exporting rms is 52 per cent in their
dataset (corresponding to the year 1994). A reduction in trade costs that will result in
an increase in the share of employment in exporting rms from 52 to 70 per cent would
result in an additional increase in inequality of 3 per cent. Once the share of employment
in exporting rms reaches 70 per cent, further reductions in trade costs will be associated
with reductions in income inequality as a sufciently large number of rms (and therefore
their workers) has access to international markets. Thus, one could argue that, as far as
international trade is concerned, the problem with Brazil’s income inequality is not that
there is too much trade, but rather that there is too little of it.
Allowing a larger number of rms and therefore workers to benet from larger
international markets is therefore likely to lead to reductions in wage inequality.
Unfortunately, participation in international markets is not as widespread as it should be.
In the Brazilian manufacturing sector only 52 per cent of workers worked in rms that
22
Trade Policies for Combating Inequality
were exporting, and perhaps more worryingly, exporting rms represented only 9 per cent
of rms. Such a small share of rms having access to international markets is common.
Figure 12 provides the share of exporting rms in the manufacturing sector in different
regions and countries. Panel (a) shows that differences between regions exist but are not
that large either. The average share of exporting rms is about 16%, with this gure going
up to 20% and 21% in Europe and Middle-Eastern countries respectively, and down to
12% in Latin America and Caribbean countries. These averages hide some important
heterogeneity across countries, and panel (b) provides the share of exporting rms in a
selected group of countries. In China for instance, more than 20% of manufacturing rms
are exporting, while they are only 5% in Thailand and about 8 to 9% in Brazil, Ethiopia
and India.
Figure 12: Share of exporting rms
(a) selected regions (b) selected countries
Ϭ ϱ ϭϬ ϭϱ ϮϬ Ϯϱ
^ƵďͲ^ĂŚĂƌĂŶĨƌŝĐĂ
^ŽƵƚŚƐŝĂ
DŝĚĚůĞĂƐƚΘEŽƌƚŚĨƌŝĐĂ
>ĂƚŝŶŵĞƌŝĐĂΘĂƌŝďďĞĂŶ
ƵƌŽƉĞΘĞŶƚƌĂůƐŝĂ
ĂƐƚƐŝĂΘWĂĐŝĨŝĐ
ůůĐŽƵŶƚƌŝĞƐ
Ϭ ϱ ϭϬ ϭϱ ϮϬ Ϯϱ
sŝĞƚEĂŵ
dŚĂŝůĂŶĚ
WĞƌƵ
DĂůĂǁŝ
/ŶĚŽŶĞƐŝĂ
/ŶĚŝĂ
ƚŚŝŽƉŝĂ
ŚŝŶĂ
ƌĂnjŝů
Source: World Enterprise Survey of the World Bank. Data report the share of rms that either exports indirectly
or directly at least 10% of their sales. Latest years available used for each country: Brazil (2009), China (2012),
Ethiopia (2015), India (2014), Indonesia (2015), Malawi (2014), Peru (2017), Thailand (2016), Viet Nam (2015).
In addition, data also show that for most of the rms, export sales only represent
a small fraction of total sales. According to Mayer and Ottaviano (2007) in Europe only
25 per cent of rms export more than 50 per cent of their turnover. And these few rms
account for 70 per cent of total exports. This leads to a very a large concentration of
aggregate exports into the hands of a very small number of rms (UNCTAD, 2018). In
a sample of 30 developing countries, Freund and Fierola (2015) show that the exports
share of the top rm in each country is on average 14 per cent. The share of the top rm
can be much larger in some Latin American and Sub-Saharan African countries. It is 65
per cent in Botswana, above 30 per cent in Burkina Faso, Niger, and Malawi, and above
20 per cent in Costa Rica and Chile.
Equal opportunities to rms, workers and countries
23
Not only do the largest rms enjoy a large share of world trade, but the entire
distribution of exporting rms is very concentrated. The share of the top ve rms
accounts on average for 30 per cent of aggregate exports. This extreme concentration of
exports in a few large rms raises concerns regarding market power both in product and
labour markets (UNCTAD, 2018).
A rst step towards addressing the role played by market power is provided by
Loecker et al. (2016). They show that the Indian trade reforms of the 1990s has led to a
decline in prices, but also to an increase in markups because only part of the reduction
in input tariffs has been transmitted to nal good prices. Thus, markups have increased,
even though reductions in nal good tariffs had the expected pro-competitive effects. This
implies that the gains for producers were larger than the gains for consumers, which is
suggestive of increases in income inequality.
5
When looking at the impact of trade on consumers, it is important to note that
consumers are also heterogeneous. Rich and poor individuals do not consume the same
type of goods. This implies that the same increase in nominal income can have a very
different impact on real income (hence welfare) depending on the goods being consumed.
Fjgelbaum and Khandelwal (2016) examined this in a sample of 20 developing and
emerging countries and they found that trade tends to be pro-poor as poor households
consume a disproportionate amount of traded goods, as well as goods that tend to have
a lower degree of substitution with domestic goods. Nicita, Olarreaga and Porto (2014)
argue that this effect is likely to be small in Sub-Saharan African countries because a large
share of poor household consumption tends to be self-produced and is not affected by
changes in market prices. In any case, if one consider inequality based on real income (or
welfare) rather than wage inequality, differences in consumption baskets are such that the
impact of trade on welfare becomes smaller.
An important dimension when examining the differences of the impact of trade
across categories of workers is how this affects the incentives to further acquire skills. A
growing literature now explores the short and long-run differences on income inequality
of trade and generally concludes that trade leads to smaller increases in wage inequality.
Indeed, as the skill premium becomes larger, individuals have incentives to acquire new
skills, which in the long run leads to a smaller skill premium and therefore smaller wage
inequality. Danziger (2017) estimates a dynamic model that allows for skill acquisition
and shows that a move towards free trade in the United States would lead to a smaller
increase in the skill premium in the long-run. Smith (2018) shows that the China shock
had a smaller impact on wage inequality in the United States in the long-run. Finally, Yang
(2018) provides similar evidence for 40 countries.
5
There is currently an interesting modelling effort undertaken by Surevato and Ottaviano (2019) that aims at
introducing product and market power in a trade model to understand the impact that trade has on the distribution
of income.
24
Trade Policies for Combating Inequality
Unfortunately, the impact of trade on skill acquisition does not always lead to more
skill acquisition and to better outcomes in terms of income inequality. Atkin (2016) shows
that a larger share of Mexican children dropped out of school when exposed to the creation
of export-manufacturing jobs. For every 25 jobs created in the export-manufacturing
sector, one child dropped out of school. This effect is explained by the increase in the
short-run opportunity cost of staying at school when unskilled manufacturing jobs are
offered nearby. Ensuring that global supply chains do not lead to these perverse effects is
something that will be returned to in the last section.
An additional phenomenon when it comes to income inequality is the premature
deindustrialization of low-income countries highlighted by Rodrik (2016). The
manufacturing sector is an important source of unskilled labour employment, and there
is an inverted-U shape relationship between the share of manufacturing employment
and GDP per capita. The problem is that before the 1990s low-income countries used
to reach the peak share at levels of GDP per capita around $12,000 (in 1990 US$). After
the 1990s the U shape relationship has shifted to the left and the maximum is reached
at much lower levels of GDP per capita (around $4,500 in 1990 US$). This implies that
manufacturing and its demand for unskilled workers is no longer the main source of
employment growth after countries reach a GDP per capita level of $4,500. Most of
the employment growth after this relatively low level of GDP per capita comes from the
service sector. The issue with this is that the service sectors that are creating the new jobs
are not sectors that boost overall productivity, and ultimately wages. Firms in wholesale,
retail, or transportation sectors may create jobs for unskilled workers, but there is little
room for productivity gains in these sectors. Service sectors such as new information and
telecommunication technologies are very likely to generate productivity gains, but these
sectors employ mostly skilled and highly trained workers. Rodrik (2016) suggests that
this rapid deindustrialization observed across the world is due to both the globalization
of production, which allows to produce from a single location and reach all consumers,
as well as technological progress. However, such deindustrialization patterns need to
be considered also as a result the increase in the use and supply of services by the
manufacturing sector as shown by Crozet and Milet (2017). Such services increasingly
accompany manufacturing goods in including not only transport but also training, after-
sale services, and nancial services for instance. Note that this implies that improving
efciency in the service sectors can also signicantly contribute to the growth of the
manufacturing sector. For evidence of this for India, see Arnold et al. (2016).
In economic terms, whether premature deindustrialization contributes to income
inequality depends on whether the manufacturing sector is more unskilled-intensive than
the service sector. However, most of the existing evidence suggests that the service sector
is often more skilled-intensive. As the economy deindustrializes, the relative demand for
unskilled workers falls, and this in turn leads to an increase in the wage gap between
skilled and unskilled workers. For instance, Mehta and Hasan (2012) provide evidence
Equal opportunities to rms, workers and countries
25
that trade in services has led to increases in wage inequality in India. Amoranto et al.
(2010) provide evidence for the Philippines of increases in wage inequality associated
with services trade in the banking, distribution, and telecommunications areas as they
provide relatively more job opportunities for skilled workers. Cassette et al. (2010) show
that the long-run effects of trade in services on income inequality are much larger than
the long-run effects of trade on goods in a sample of 10 OECD countries. Interestingly,
the increase in income inequality associated with trade in services is more pronounced at
the top of the income distribution.
Income inequality is not the only type of inequality that is targeted by SDG 10.
Decreases in gender inequality are also a goal of SDG 10. Trade integration has often
been associated with a rise in the female share of employment, or feminization of labour,
thus leading to a reduction in gender inequality. Pieters (2018) identies three reasons
why trade may reduce gender inequality. First, the pro-competitive effects of trade
should reduce discrimination, as discriminating rms tend to be less efcient and they
are either pushed out of the market or they need to adopt their behavior and discriminate
less. Second, trade may induce technological innovation, which generally implies that
manufacturing jobs are less physically demanding and therefore more adapted for
women, increasing the relative demand for female employment although mainly for lower
skilled tasks that prior to the introduction of technological improvements required the use
of physical strengths. Third, if the comparative advantage of a country lies in products
that are more traditionally female-intensive, then trade will increase the demand for these
products and therefore the relative demand for female workers.
6
There is evidence in the literature for these three effects. Yahmed (2017) provides
evidence that rms subject to import-competition in Uruguay discriminate less than rms
that are not exposed to import competition. Juhn et al. (2013) provide evidence for the
second effect in Mexico. They show that the demand for unskilled women increases
in Mexico as technological progress associated with trade reforms reduced the need
for physical-intensive tasks. Finally, there is evidence in support of the third effect for
Colombia. Ederington et al. (2009) show that as Colombia opened up to trade in the late
1980s and early 1990s, the share of female employment increased, and that this increase
was larger in sectors that became more exposed to international trade. This is consistent
with the idea that Colombia had a comparative advantage in traditionally female-intensive
sectors.
It is important to note that the third effect is conditional on countries having a
comparative advantage in female-intensive products. By denition, not all countries
can have a comparative advantage in female-intensive products. Some need to have
6
A caveat is the competitive advantage effect. Firms that open to international competition tend to hire more
women, who often are paid less and have less bargaining power, as a cost-cutting strategy. So even though
female employment increases, gender wage gap may increase as well. The early phases of trade liberalization in
Asia offer such evidence.
26
Trade Policies for Combating Inequality
a comparative advantage in male-intensive products and therefore trade is likely to
increase the relative wage of men. Gupta (2015) provides evidence for India where trade
reforms led to an increase in the male-female wage gap and the gap became larger
as sectors became more exposed to international trade in the early 1990s. The gap
also increased due to skilled-biased technological progress in sectors more exposed to
import-competition, which hurt female employment more as in India when men tend to be
more involved in technology-based production than women are on average.
This ambiguity in empirical results leads Pieters (2018) to conclude that the
literature does not offer a clear pattern in terms of the impact of trade on gender inequality.
However, it provides some interesting guidance, suggesting that the impact will depend
on whether the country has a comparative advantage in female-intensive sectors. It also
provides policy guidance in terms of education policies needed to address increases in
gender inequality associated with trade or trade reforms. Other suggestions can also be
garnered from UNCTAD country and regional studies on the impact of trade reforms on
women.
7
In conclusion, if the early literature had trouble reconciling increasing income
inequality in low-income countries with the theoretical understanding provided by
classical trade models, simple extensions of these models could easily explain it without
any need for the introduction of heterogeneous rms or workers. Indeed, allowing for
several factors of production and introducing complementarities between natural
resources and skilled labour could provide some explanation for the increases in income
inequality associated with trade reform in the low-income countries. Similarly, models of
trade in tasks rather than trade in goods could also provide an explanation. Skilled-biased
technological progress accompanied or induced by trade can also explain increases in
income inequality as low-income countries integrate into world markets.
What models of heterogeneous rms and heterogeneous workers with large
datasets matching employers and employees allow us to do is to more precisely
estimate the role played by different mechanisms and the importance that trade played
in the increases in income inequality. One important conclusion from these quantitative
exercises is that trade has indeed led to sizeable increases in income inequality, but it is
by far not the main driver of the observed increases in income inequality in both high and
low-income countries (Helpman, 2018).
A second conclusion is that in order to reduce income inequality what is needed
is to give access to a larger number of workers to the benets offered by global markets.
Facilitating micro, small and medium size enterprises to enter global markets should be
a priority when considering trade reforms. This implies that trade reforms should also
consider reducing anti-competitive behaviors by large rms in international markets. To
tackle this concentration of market power by large rms, it seems unlikely that a reversal
7
See https://unctad.org/en/Pages/DITC/Gender-and-Trade/Trade,-Gender-and-Development.aspx
Equal opportunities to rms, workers and countries
27
towards more protected national markets could help, as this is likely to increase large
rms’ market power at the local level.
A nal message is that trade reforms need to be accompanied by other non-
trade adjustment and redistribute policy measures that address some of the unintended
consequences of greater integration into world markets. Examples of accompanying,
anking measures should consider the indirect effect of economic integration. For
example, measures to prevent children dropping out of school because of trade-related
job opportunities, or measures counteracting the increases in gender inequality often
due to technological progress associated with trade. Training, education and social
programmes that address these unintended consequences need to be put in place if
they do not exist before countries engage in trade reforms. All this indicate the need to
conduct ex-ante assessments of trade reforms that allow to assess the impact of such
reforms on specic segments of the population, such as women or youth, and not only
on a country as a whole.
29
4. TRADE POLICIES, MARKET ACCESS AND
INEQUALITY
The objective of this chapter is to examine the impact that different trade policy
instruments and institutions have had on between- and within-country income inequality.
It starts with examining how market access conditions to high-income countries affects
inequality in low-income countries. Both tariff and non-tariff measures (NTMs) are
examined, as well as private standards. Fair Trade initiatives, for example, often aim
to a fairer distribution of gains along international value chains. The chapter concludes
with examining the impact that trade policies and market access have on within-country
income inequality in low-income countries.
When looking at trade policies particular emphasis is given to NTMs because tariffs
have become less and less restrictive over time. Figure 13 provides the world’s import-
weighted average tariff between 1989 and 2017 and shows a quite steady reduction in
average levels of tariff protection around the world.
Figure 13: World import-weighted average tariff, 1989-2017
ϱ
ϳ
ϵ
ϭϭ
ϭϯ
ϭϱ
ϭϳ
ϭϵ
Ϯϭ
Ϯϯ
ϭϵϴϵ ϭϵϵϭ ϭϵϵϯ ϭϵϵϱ ϭϵϵϳ ϭϵϵϵ ϮϬϬϭ ϮϬϬϯ ϮϬϬϱ ϮϬϬϳ ϮϬϬϵ ϮϬϭϭ ϮϬϭϯ ϮϬϭϱ ϮϬϭϳ
Source: UNCTAD Trains database.
At the same time, NTMs have become more common. According to UNCTAD
(2018) technical regulations were imposed on 37 per cent of tariff lines in 1999. The
equivalent gure for 2014 is above 60 per cent. Maggi, Mrazova and Neary (2018) explain
this phenomenon using a political economy model whereby as tariffs are reduced through
multilateral cooperation, governments turned to NTMs for protective measures. Because
NTMs are less transparent instruments than tariffs, they are able to set them at even
30
Trade Policies for Combating Inequality
more restrictive levels than pre-existing tariffs in order to redistribute income to domestic
lobbies. Figure 14 provides estimates of the relative restrictiveness of tariffs and NTMs in
high-income countries. In both agriculture and manufacturing, the trade restrictiveness
of NTMs is larger than the trade restrictiveness of tariffs, with NTMs in agriculture being
almost twice as restrictive as tariffs.
Figure 14: Relative trade restrictiveness of tariffs and NTMs in high-income
countries
Ϭ
ϱ
ϭϬ
ϭϱ
ϮϬ
Ϯϱ
ϯϬ
ϯϱ
ϰϬ
ϰϱ
ŐƌŝĐƵůƚƵƌĞ DĂŶƵĨĂĐƚƵƌŝŶŐ
dĂƌŝĨĨƐ EdDƐ
Source: Kee, Nicita and Olarreaga (2009). NTMs are expressed in “tariff-equivalent” units. The level of NTMs in
agriculture is equivalent to an additional 28 per cent tariff.
An important concern with NTMs is that even when set in a non-discriminatory
manner, they may end up having discriminatory effects. Penello (2014) shows that their
discriminatory effect may end up hurting the poorest countries and exacerbate income
inequality between countries. Focusing on sanitary and phyto-sanitary (SPS) measures
imposed by European countries in the agricultural and food sector, the study nds that
each additional SPS measure leads to a reduction in exports from low-income countries
that is almost twice as large as the reduction in exports from the rest of the world. So even
if the motivation behind the imposition of NTMs may not be protectionist and motivated
by health or environmental concerns, the increase in the cost of exporting for low-income
exporters associated with the measure is larger than for other exporters, which leads to
a redistribution of market share away from the poorest countries.
To overcome this problem Murina and Nicita (2017) examine the role that can be
played by Preferential Trade Agreements (PTAs) between high and low-income countries.
The idea is that the stronger impact of NTMs on exports from low-income countries
is explained by the weaker capacity of rms in low-income countries to comply with
Equal opportunities to rms, workers and countries
31
the technical or sanitary and phyto-sanitary requirements imposed by NTMs in high-
income countries. PTAs between high and low-income countries often have technical
assistance components to address this lack of capabilities in low-income countries,
including in PTAs signed by the European Union. Murina and Nicita (2017) show that
when low-income countries have a PTA with the European Union, the negative effect
of the NTM in the European Union is reduced. This result suggests that promoting the
inclusion of technical assistance in PTAs in order to address the discriminatory impact of
NTMs on low-income exporters is one way through which trade policy can address the
potential increase in between country income inequality associated with the increase in
the prevalence of NTMs.
In a similar vein, Nicita and Seiermann (2016) call for more technical assistance
and “aid for trade” granted to least developed countries to overcome the barriers imposed
on their exports by NTMs in rich countries. They point out that most G20 countries have
schemes in place that provide duty free access to least developed countries. Even if rules
of origin associated with duty free access in some G20 countries are quite restrictive
and the exceptions to duty free access occur in products in which low-income countries
have a comparative advantage, the removal of all tariff barriers would increase Least
Developed Country (LDC) exports by only $10 billion. On the other hand, the removal of
the cost imposed by G20 NTMs on low-income countries exporters, through technical
cooperation and “aid for trade” would increase their exports by more than $20 billion. If
SDG 17.11, which aims at doubling LDCs global export share by 2020 is to be achieved,
a boost to technical assistance and “aid for trade” towards LDCs is needed, especially in
building capacities to meet product standards and other NTMs. This would not only help
to ensure that SDG 17.11 is reached, but it will help reach SDG 10 as well.
As discussed in the previous chapter an important concern when countries
integrate global markets is that the increased opportunities are only offered to large and
highly productive rms, which then leads to increases in within-country inequality. There
is a need to ensure that “aid for trade” initiatives targeting SDG 17.11 does not hurt the
objective of SDG 10 of reducing income inequality within countries. To help reach these
two goals, the “aid for trade” to LDCs should pay particular attention to helping small and
medium size rms as well as women entrepreneurs. This issue is raised again at the end
of the chapter.
In addition to addressing regulatory and government measures imposed by
countries to respect public policy objectives so as to minimize their impact on trade-
related inequality between or within low-income countries, the matter of private standards
is becoming increasingly relevant. Private standards, e.g. certain product quality standards
or product characteristics demanded by value-chain managers or retailers, impose a
similar challenge as NTM measures to exporters in low-income countries, the difference
being that private standards do not rely on government regulation of safety, health or
32
Trade Policies for Combating Inequality
technical concerns, but on the taste and preferences of consumers in global markets.
Like NTMs and government- imposed trade regulation, private standards are likely to be
relatively costlier for rms in low-income countries, particularly when they are required to
get certied for standards by third-party certiers. This creates a wedge between large
and highly productive rms that have the means to adopt the private standards and small
and less productive rms which may be left outside of global markets. Thus, private
standards, like NTMs and other trade regulations can lead to lower participation in global
trade and in turn to increases in both between- and within-country inequality.
As regards inequality, a type of private standard that may transmit the impact
from trade more directly to changes in within-country inequality involves Voluntary
Sustainability Standards (VSS). The United Nations Forum on Sustainability Standards
(UNFSS)
8
denes VSSas “standards specifying requirements that producers, traders,
manufacturers, retailers or service providers may be asked to meet, relating to a wide
range of sustainability metrics, including respect for basic human rights, worker health
and safety, the environmental impacts of production, community relations, land use
planning and others.” Like Sanitary and phytosanitary (SPS) measures and technical
barriers to trade (TBT) measures, VSS address product quality and attributes, but VSS
also set standards for production and processing methods. Today, there are more than
240 VSS in more than 80 sectors and 180 countries (UNFSS, 2018).
The idea of VSS is to introduce economic incentives for rms to adopt production processes
that are healthier, more respectful of workers, the environment and other socio-economic objectives
that consumers, and producers as global citizens, care about. The majority of VSS aim at reducing
the potentially negative impact of agro-forestry and shery production or low-tech manufacturing
in developing countries on local and global development challenges such as child labour, better
wage to primary-sector producers, loss in biodiversity, among others (Table 1). Since 2016, global
rms increasingly see VSS as a tool to capture market share in dynamically growing sectors by
demonstrating that they contribute to the achievement of the SDGs (UNFSS 2018, UNFSS 2016,
WWF 2017). Figure 15 shows the number of requirements (covered by at least one VSS) that directly
speak to this goal and its associated targets.
8
The UNFSS is an establishment under the coordination of 5 UN agencies, FAO, ITC, UNCTAD, UN Environment,
and UNIDO. UNFSS functions through regular exchange of information and forward plans on VSS-related policy
activities by pooling resources in order to synchronize efforts in ensuring ‘policy coherence, coordination and
collaboration’. This cooperative effort is mainly represented through: 1) Informed policy dialogue; 2) Research and
analysis; 3) Support for national initiatives. UNCTAD serves as the Secretariat of UNFSS
Equal opportunities to rms, workers and countries
33
Table 1. Issues related to sustainable development addressed by VSS
ISSUE AREA Specic Issues
Environmental sustainability (e.g.) Animal Welfare, Biodiversity, Carbon & Climate Change,
Forest Management, Organic production, Renewable energies, Soil
management, Use of Chemical Substances, Waste management,
Water management
Social development (e.g.) Child labour, Collective bargaining, Discrimination at work,
Freedom of association, Gender issues, Health and safety at work,
Human Rights, ILO 8 core conventions, Local communities, Work
and labour rights, Living wages
Ethics (e.g.) Anti-bribery, Anti-corruption, Business relationships, Due-
diligence assessments, Gifts, Political contributions
Source: Sustainability Map (International Trade Centre).
Note: The above is a non-exhaustive list of developmental issues addressed by the ITC Sustainability Map database
which covers 241 VSS applicable to more than 80 sectors and 180 countries.
Figure 15 Goal-To-Goal Comparison of VSS and SDGs
ϱ
ϵ
ϵ
ϵ
ϭϯ
ϭϱ
ϭϴ
ϲϬ
ϳϴ
ϬϮϬϰϬϲϬϴϬϭϬϬ
^'ϭϳ͗WĂƌƚŶĞƌƐŚŝƉƐĨŽƌƚŚĞŐŽĂůƐ
^'ϱ͗'ĞŶĚĞƌĞƋƵĂůŝƚLJ
^'Ϯ͗ĞƌŽŚƵŶŐĞƌ
^'ϭϰ͗>ŝĨĞďĞůŽǁǁĂƚĞƌ
^'ϯ͗'ŽŽĚŚĞĂůƚŚĂŶĚǁĞůůͲďĞŝŶŐ
^'ϲ͗ůĞĂŶǁĂƚĞƌĂŶĚƐĂŶŝƚĂƚŝŽŶ
^'ϭϯ͗ůŝŵĂƚĞĂĐƚŝŽŶ
^'ϭϱ͗>ŝĨĞŽŶůĂŶĚ
^'ϭϮ͗ZĞƐƉŽŶƐŝďůĞƉƌŽĚƵĐƚŝŽŶĂŶĚĐŽŶƐƵŵƉƚŝŽŶ
^'ϴ͗ĞĐĞŶƚǁŽƌŬĂŶĚĞĐŽŶŽŵŝĐŐƌŽǁƚŚ
ηŽĨ^'ͲƌĞůĞǀĂŶƚƌĞƋƵŝƌĞŵĞŶƚƐ
Source: UNFSS 2018.
Note: Using the ITC Sustainability Map database; Benchmarking 10 selected SDGs against the requirements of the
122 VSS in the sample, the analysis reveals a signicant potential to create institutional complementarities between
VSS and the SDGs.
The economic rationale for VSS is linked to the existence of asymmetric information
regarding production processes. The markets for environmentally safe or socially
responsible goods may not exist if producers that are respectful of the environment
and other social goals associated with SDGs cannot credibly convey this information
34
Trade Policies for Combating Inequality
to consumers who care about how products are made. Setting of sustainability
standards, labelling and third-party certication schemes through VSS are the private
sector response to this market failure.
9
For example, the theory of labelling shows that
the introduction of this type of schemes improves welfare in both low-income producing
and high-income consuming countries as they help provide information in a market that
needs it (Podhorsky, 2013).
However, there is not enough evidence that VSS have genuinely contributed to
the improvement of living conditions of developing-country producers, for the following
reasons. First, the impact of VSS adoption on local producers is highly context specic.
Labelling and certication costs faced by low-income country producers can be quite
high, which means that labelling may not necessarily increase welfare for certied farmers
even if they receive higher prices. In a study of a Fair Trade scheme in Guatemala de
Janvry et al. (2014) report certication costs as high as $1500, with expected prots
from participation in the Fairtrade coffee cooperative close to zero. More generally, non-
certied growers are often too poor to afford certication. If the introduction of private
standards ends up hurting the poorest of the poor, this will lead to undesirable increases
in income inequality at the very bottom of the income distribution. Dragusanu and Nunn
(2018) nd that certied coffee producers in Costa Rica do receive higher prices, but that
skilled growers benet the most from certication, suggesting that attention should be
paid to how gains are distributed to achieve SDG 10.
Second, imposing certain standards on certied rms, but not others, can also
have unintended consequences. Bad practices may simply be displaced from certied
to non-certied rms, without changing the aggregate environmental or social problem.
In some cases, certication can even make things worse. Basu and Zarghamee (2009)
show how consumer boycotts in high-income countries of products produced in low-
income countries with techniques that are not aligned with SDGs, such as the use of child
labour, can lead to more unsustainable production, not less.
Lastly, the proliferation of multiple VSS within a same sector (e.g. coffee) focusing
on similar issues without interoperability creates confusion for producers, buyers, and
consumers. The current multiplicity of VSS makes it difcult to keep track of them, which
ends up increasing costs related to information and certication. It can also lead to a
“race to the bottom” in terms of certication requirements, as different schemes compete
to attract producers into their standards. The outcome of this race-to-the-bottom among
multiple VSS agencies can lead to less, not more, sustainable production as shown by
Fischer and Lyon (2014). There is an emerging need to increase transparency and seek
mutual recognition and harmonization across sustainable standards and labels.
9
VSS can act as mechanisms that consider impacts on sustainability associated with the production of goods and
services and help consumers that care about dimensions of production that cause environmental harm or violate
norms and social preferences to allocate their expenditures to products that do not do so (Auriol & Schilizzi, 2015;
Baron, 2011; Jahn, Schramm & Spiller, 2005; Podhorsky, 2013).
Equal opportunities to rms, workers and countries
35
In practice, it is difcult to assess quantitatively whether the benets of VSS
adoption outweigh the potential unintended effects. While the large empirical literature
suggests that price, quality and workers’ welfare in certied rms is higher than in non-
certied rms, the majority of studies shows simple correlations (de Melo and Olarreaga,
2019). Due to limitations in data availability, it is usually not possible to establish the causal
impact of certication on prices, quality and working conditions, which hinders the public-
sector policy making in this area.
10
The emphasis so far has been essentially on the impact of trade policies of high-
income countries and market access of low-income countries to their markets. Trade
policies between low-income countries, and access to their respective markets also have
an impact on income inequality within low-income countries as they tend not to have a
homogeneous impact on the opportunities offered to different rms and their workers.
In a study of how market access barriers including tariffs and NTMs, faced by
Peruvian exporters in Latin America, Fugazza et al. (2019) nd that the imposition of new
barriers in destination markets hurts small exporting rms, by reducing the likelihood
that they will export to that market, as well as the value of their exports. Surprisingly,
the increases in protection in destination markets helps the large exporting rms, by
increasing their likelihood of continuing to export and the value of their exports. Fugazza
et al. (2019) show that this is consistent with the idea that large rms when facing new
barriers are able to concentrate their exports on a few core products that benet from
the reallocation of resources within the rm, whereas small rms that tend to export a
single product, do not have that margin of adjustment. In any case, their results suggest
that when countries face a deterioration of their market access to foreign markets, this
tends to hurt small exporters more than large exporters. In this case, increases in trade
protection often leads to a stronger concentration of foreign exports in the hands of few
very large rms.
Thus, while policy measures that restrict imports can reduce income inequality at
home as smaller and less productive rms are able to participate in the domestic market,
the same policy measures generally hurt small foreign rms, therefore creating problems
of income inequality abroad. If governments individually set trade policy to reduce income
inequality, this is likely to be inefcient from the world point of view, as governments
will not consider the impact of their actions on income inequality in other countries.
This highlights the importance for cooperation in trade policy at the bilateral, regional or
multilateral level to address issues associated with income inequality.
10
To tackle the data challenge, UNCTAD has developed a VSS “Perception” Assessment Toolkit to help the
government systematically collect data and fact-based information on the preparedness of different stakeholders
towards adopting a VSS in a specic agricultural value chain. The outcome of this assessment can help policy
makers detect areas where policy could play a role in mitigating unintended effects of VSS.
36
Trade Policies for Combating Inequality
Social issues such as income inequality are currently not addressed at the
multilateral level in the World Trade Organization (WTO). Bilateral agreements however
often address such issues. Many include labour clauses, which do not focus on income
inequality issues directly, but promote the respect of workers’ rights, or gender equality.
The inclusion of these types of clauses in trade agreements is sometimes seen as hidden
protectionism in high-income countries towards exports from low-income countries
with perhaps lower labour standards (Bhagwati, 1995). Some recent trade agreements
introduce gender-specic chapters to overcome trade obstacles to the fuller and more
equal participation of women.
Carrère et al. (2018) use a new dataset of labour clauses in bilateral and regional
trade agreements to show that if anything, the inclusion of labour clauses in bilateral
and regional trade agreements tends to increase, not reduce, exports from low-income
country to high-income countries. This is consistent with the literature showing that
better working conditions increase labour productivity in low-income countries, as well
as demand for those products in high-income countries. Unfortunately, the inclusion of
labour clauses in trade agreements among low-income countries is very rare. Carrère
et al. (2018) nd that less than 3 per cent of agreements among low-income countries
have social clauses that have any enforcement or deep cooperation provision. The trend
towards including this type of provision in trade agreements among low-income countries
is not growing either. Low-income countries concerned with the impact of trade and trade
agreements on income inequality should be more open to including this type of chapter
in trade agreements they negotiate among themselves.
Improving the access of small rms to global markets is also likely to help reduce
income inequality as small rms generally employ mostly unskilled labour. In a sample
of low-income countries, and using labour survey data provided by the World Bank’s
I2D2 dataset, Cruz et al. (2018) show that the share of skilled workers (dened as those
with completed secondary education) in small rms (dened as those with less than 10
employees) is on average 25 per cent. In large rms, the share of skilled workers doubles.
By improving the relative access of small rms to global markets, the relative demand
for unskilled workers increases, reducing the wage gap between skilled and unskilled
workers.
One promising way of improving the access of small rms to global markets is to
promote online trade. Online platforms signicantly reduce the cost of reaching foreign
consumers for rms that do not have the capacity or the volume to otherwise promote
their products in foreign markets. There is evidence suggesting that online markets and
the services they offer are particularly helpful for small rms, and have little impact on large
rms (Hui, 2019). The result of the reduction in the cost of exporting on online platforms
in favour of small rms is that almost all rms participating on online platforms sell to
foreign consumers (see Figure 16). This must be compared to the overall share of rms
Equal opportunities to rms, workers and countries
37
participating in global markets that was also reported in Figure 12. The differences are
striking. While only a few large rms are able to export ofine, almost all rms on online
platforms are able to export.
Figure 16: Share of exporting rms online and ofine
͘Ϭ
͘Ϯ
͘ϰ
͘ϲ
͘ϴ
ϭ͘Ϭ
ŚŝůĞ /ŶĚŝĂ /ŶĚŽŶĞƐŝĂ :ŽƌĚĂŶ WĞƌƵ ^ŽƵƚŚ
ĨƌŝĐĂ
dŚĂŝůĂŶĚ hŬƌĂŝŶĞ
ĞĂLJĨŝƌŵƐ ŽĨĨůŝŶĞĨŝƌŵƐ
Source: Lendle and Olarreaga (2017) with data from eBay and World Bank’s Enterprise Survey.
According to Cruz et al. (2018), the rapid increase in online exports in some low-
income countries has contributed to the decline in the wage gap between skilled and
unskilled workers. The economic impact of their estimates is relatively small because
online trade is still relatively small. However, it has been growing at a pace 7 times
faster than traditional trade over the last decade. Their results suggest that if this trend
continues, online platforms have the potential to make trade more inclusive by allowing
smaller rms to access global markets.
Export promotion efforts also often focus on small rms. It is sometimes
suggested that this may be a waste of resources given that small rms do not have
the ability to compete in global markets. However, the rapid growth in online exports
by small rms has challenged this. Moreover, there is strong evidence suggesting that
focusing export promotion efforts on small rms is the right strategy. Volpe and Carvallo
(2010) disentangle the impact of Prochile’s programmes on exports of Chilean exporting
rms across their size distribution. They nd that small rms benet more from export
promotion than large rms. This result is conrmed in a sample of Argentinean exporting
rms in Volpe, Carballo and Garcia (2012). In the same vein, De Falcis et al. (2018) nd
that allocating a higher export promotion budget to new exporters raises the number of
exporters. Interestingly, the share of the budget allocated to small rms also delivers this
result, whereas when a large share of the budget is allocated to large rms, the number
of exporters declines.
38
Trade Policies for Combating Inequality
All the above papers used rm-level data on exporting rms. Often a relatively
small exporting rm may be a relatively large rm in the domestic market. This creates
complications in the analysis. To overcome this, Cruz (2014) uses rm-level customs data
in Brazil and provides evidence that suggests that export promotion helps medium-size
rms enter export markets. This is also consistent with Olarreaga, Sperlich and Trachsel
(2019) who nd that in a sample of around 100 export promotion agencies in high and
low-income countries, a broader focus of export promotion on medium-size rms rather
than large rms is associated with a higher GDP per capita. Combining these results
with the results of Volpe et al. (2010), Volpe et al. (2012) and De Falcis et al. (2018), it
can be inferred that export promotion helps medium-size rms enter export markets and
small exporting rms diversify across products and markets. Thus, targeting medium size
domestic rms or small exporters with export promotion efforts seems to be an efcient
way of allocating export promotion resources. It is also a way of ensuring that gains from
trade are better distributed.
To summarize, it was shown in this chapter that trade policies and institutions
can affect income inequality both within and across countries. They can therefore be a
powerful tool to achieve the targets of SDG 10. Market access barriers faced by exporters
in low-income countries can affect both between- and within-country income inequality.
NTMs, in particular, even if set in a non-discriminating manner, tend to discriminate
against low-income countries. In addition, they also discriminate against the smallest
rms forcing them to drop out of export markets or reduce their market share, which
tends to increase within-country income inequality. Technical assistance in bilateral or
regional trade agreements to address NTMs, as well as the inclusion of labour clauses,
can help address these barriers and their consequences on income inequality.
Private institutions, such as VSS, can also help address income inequality. Some of
them, such as the fair-trade schemes, are probably too small to have a signicant impact
at this stage. Even if they were large enough, it would also be naive to consider them as the
silver bullet to address poverty and income inequality associated with participation of low-
income countries in global markets. These schemes can have unintended consequences
and therefore need to be accompanied with adequate policies, and programmes that
directly target poverty and income inequality.
Finally, improving small rms’ access to global markets can help make international
trade more inclusive. Both online platforms and export promotion programmes that
target small rms appear effective tools to address the barriers faced by smaller rms in
world markets. By doing so they provide equal opportunities to both unskilled-intensive
small rms and skilled-intensive large rms in global markets, which then contributes to
reducing income inequality.
39
5. A TRADE POLICY AGENDA TO HELP REDUCE
INEQUALITY
The objective of this chapter is to propose a trade policy agenda to help reduce
income inequality. The discussion is organized around three pillars that aim at designing
trade policies and institutions that provide equal opportunities to rms, workers and
countries. Each of these three pillars is discussed in turn.
5.1 Equal opportunities for rms
The rst pillar is providing equal opportunities to rms. As discussed in earlier
chapters, the high concentration of market power in global markets has implications for
how trade policy affects economic performance and income inequality. The same non-
discriminatory trade barrier affects differently small and large rms. This differentiated
impact in turn affects the distribution of income. Curbing the market power of large rms
and allowing small and medium size rms to participate in global markets should be part
of any package trying to make trade more inclusive.
There are ve promising avenues to provide equal opportunities to small and large
rms in global markets. First, addressing non-tariff measures and non-tariff barriers. It
requires promoting transparency in tariffs, NTMs and the processes linked to regulations.
Gathering such information, in particular NTMs, is very costly and complex. Transparency
initiatives such as the Transparency in Trade Initiative by the African Development Bank
(AfDB), International Trade Centre (ITC), UNCTAD and the World Bank as well as the
“TOP 25 Markets” project by UNCTAD and the World Bank aim to ll this gap. Under the
coordination of UNCTAD, comprehensive information on NTMs covering more than 90
per cent of world trade have been collected and disseminated (trains.unctad.org). This
provides traders as well as policy makers and researchers with the information about all
requirements for specic products. UNCTAD is also supporting regional institution, such
as the African Union, in developing tools and systems to address non-tariff barriers that
can arise in the conduct of regional trade under preferential arrangements. Transparency
in the requirements for VSS is equally important. Smaller producers need the availability
of information about standards and their possibility to comply with and getting certied
producers.
Trade portals (see e.g. https://businessfacilitation.org/) aim to provide transparency
on processes linked to regulations. Indeed, this concerns also targeted national efforts to
reduce overly bureaucratic and cumbersome domestic regulations that often impair SME
investments in developing countries. Unlocking business opportunities for SME´s through
more transparent and pragmatic national regulations are often overlooked and need to
be addressed.
40
Trade Policies for Combating Inequality
Second, the promotion of online trade has the potential for levelling the playing
eld between small and large rms in global markets. By providing a relatively cheap
way of creating reputation through online platforms’ feedback mechanisms and providing
services that particularly address barriers faced by small rms (such as the global
shipping programme put in place by eBay or Amazon for instance), online platforms
disproportionately help reduce the costs faced by small rms when participating in
global markets. Moreover, e-commerce as the potential to be a powerful tool for women
entrepreneurs, but for this to be realized it is essential to bridge the digital divide for
women. However, it is worth noting that many online platforms have a dual role: a
marketplace and retailer at the same time. Therefore, they are in a position to potentially
impose disadvantageous terms and conditions on sellers competing with their products
on their platform. In this regard, online platforms should be required to provide services in
a fair and non-discriminatory manner. India, for example, has instituted new e-commerce
rules that took effect on 1 February 2019.
11
The new rules are expected to prevent
anticompetitive and abusive practices, as well as predatory pricing by big e-commerce
platforms to the detriment of local small and medium sized online traders.
12
Online cross-border trade remains limited compared to traditional trade, but it
has been growing fast in recent years, and it is expected to double over the next 5 years.
Importantly, as highlighted in UNCTAD (2015) encouraging online trade also requires the
adequate transport and logistic infrastructure, as well as reliable access to the internet.
It is also equally important to ensure that online platforms are not abusing their own
market power in developing and developed countries. In addition to a comprehensive
domestic regulatory framework for online platforms, regulations at the international level
may be needed to ensure that the behaviour of some of these large platforms (Amazon,
eBay or Alibaba) is not hurting more than helping small rms through abusive pricing for
example. Furthermore, to increase trust consumer protection in e-commerce needs to
be appropriately ensured.
The third avenue for equal opportunities for rms of different size is to encourage
the targeting of small and medium size rms by export promotion programmes and
increase their participation in international trade fairs. This could also be combined with
the promotion of online trade. Export promotion has been seen as particularly efcient at
encouraging medium size rms to enter export markets and small exporters to diversify
their product and market portfolio. There is evidence that the efciency of this is leveraged
when programmes explicitly target small and medium size rms. It has also been shown
that the targeting of medium size rms by export promotion programmes is associated
with higher levels of GDP per capita.
11
Press Note No. 2 (2018 Series), Government of India, Ministry of Commerce and Industry, Department of
Industrial Policy and Promotion, Review of the policy on Foreign Direct Investment in e-commerce.
12
UNCTAD secretariat background note on “Competition Issues in the Digital Economy” (upcoming) for the 18
th
session of the Intergovernmental Group of Experts on Competition Law and Policy to be held on 10-12 July 2019.
Equal opportunities to rms, workers and countries
41
The fourth avenue involves promoting the inclusion of technical assistance and
“aid for trade” programmes in bilateral and regional agreements that help rms in low-
income countries, in particular small and medium size rms, to overcome barriers imposed
by NTMs. Such programmes should also target barriers that prevent women from fully
participating in international trade. There is evidence that the technical assistance provided
by the European Union within European Union bilateral trade agreements has helped
exporters in low-income countries, and in particular LDCs, to overcome these barriers.
Other agreements between high- and low-income countries should encourage this type
of assistance and cooperation to ensure that all rms benet from trade agreements
The fth avenue for equal opportunities for rms is to foster competition in national
and regional markets. This requires effective competition law enforcement. National and
regional competition authorities may investigate and sanction anti-competitive conduct by
dominant rms. Considering the challenges faced by competition agencies of developing
countries and LDCs in competition law enforcement, there is a need for promoting
international and regional cooperation in competition law enforcement. For example, the
Common Market for Eastern and Southern Africa (COMESA) Competition Commission
is the regional entity in the COMESA region, which has the authority to review mergers
having an effect within the common market.
13
Another way of promoting competition is by introducing clauses, which may
facilitate cooperation and exchange of information for law enforcement between relevant
authorities, in competition chapters of bilateral and regional trade agreements. National
competition authorities may not have the right incentives to restrict the abusive behaviour
of their large exporters or importers in international markets. Moreover, many low-income
countries do not have well-functioning competition authorities. Technical assistance and
cooperation among trading partners can help internalize these types of externalities
in order to ensure that large rms from high-income countries are not the only ones
beneting from international trade.
Importantly, addressing international competition issues may require also
addressing cooperation in other areas. Liu, Mian and Su (2019) argue that part of
the increase in market power in the United States has to do with the low-interest rate
environment that provides an edge to large rms relative to new entrants and small rms.
This implies that in the current low-interest rate environment there is the need to adopt a
more aggressive competition. This recommendation should also apply in the case of large
inows of capital that would keep interest rates low.
13
https://www.comesacompetition.org/
42
Trade Policies for Combating Inequality
5.2 Equal opportunities for workers
The second pillar involves bringing equal opportunities for participating in global
markets to all workers, including women and youth. Three potential avenues can be
considered to address this. First, the introduction of labour clauses with the objective of
promoting workers’ rights in trade agreements, particularly in trade agreements involving
low-income countries. Contrary to what is sometimes suggested, trade agreements with
labour clauses tend to lead to more, not less, exports from low to high-income countries,
because of higher worker productivity in healthier work environments, as well as more
demand by global consumers for products produced in accordance with workers’ basic
rights. It has also been shown that the inclusion of labour clauses in trade agreements is
also correlated with fewer violations of workers’ rights in low-income countries (Raess and
Sari, 2018). Labour clauses are sometimes criticized as a form of hidden protectionism
(because their imposition on some low-income countries raises their production costs and
reduces their competitiveness relative to high income countries where labour standards
are already high). But more importantly they also seem to improve workers’ welfare and
open market opportunities for exports because many consumers refuse to buy products
from countries with poor labour rights performance. On a related matter, the inclusion
of a gender chapter in trade agreements could help address (with targeted technical
assistance programmes) gender inequality originating from economic integration.
The second approach for introducing equalizing outcome for workers in low-
income countries is promoting the use of private standards such fair trade or voluntary
sustainability standards. However, the evidence of their effectiveness in increasing living
standards among the poorest individuals in low-income countries is rather mixed. A
necessary condition for this type of mechanism to have the intended consequences is
that there is a sufciently large demand for certied products. This requires transparent
and credible agencies, and accessible certication costs for producers. The proliferation
in the number of standard and certifying agencies is not a step in the right direction, and
more cooperation between the public and private sector is needed to correctly regulate
the evolution of private standards and enhance their credibility. More importantly, the
introduction of these standards may have unintended consequences on those left outside
the certication system. These are often individuals or households that are the most in
need of assistance. It is therefore important that accompanying measures and policies
and nancing tools be put in place when these standards are introduced.
Third, investment in education and training of poor households which are at the
margin of these types of standards is another way equalize workers’ benet from global
markets. Many sustainability initiatives provide training, as well as scholarships to the
children of certied producers. While these are initiatives to encourage progress, they can
also further increase the gap between certied and non-certied households. Thus, a third
avenue to explore is for governments to ensure that education opportunities and training
Equal opportunities to rms, workers and countries
43
is provided to all, and not only to those benetting from private initiatives. As shown
by Dynarski et al. (2018), this does not always require a lot of additional investment.
The provision of information regarding education and training opportunities to excluded
individuals is often not expensive and can result in very large changes in education
outcomes, and therefore in social mobility and long-term income inequality. This could
have large implications for reducing gender inequality. Solutions through credit markets,
universal minimum income, or efcient safety nets need to be considered as well.
5.3 Equal opportunities for countries
The third pillar has to do with providing equal opportunities to trade to all
countries, which would obviously have an important impact, not only on inequality
between countries, but also within country. This third pillar provides a more important
role to transnational governance. A key issue is safeguarding the open, transparent and
predictable multilateral trading system (target 10 of SDG 17) and ensuring that in any
reform process that it remains inclusive and becomes more “equitable”, including in terms
of updated, modernized and suitable special and differential treatment (target 10.A of
SDG 10) directed at attenuating the adjustment costs falling on rms and workers and
at augmenting the capacities of developing countries to produce, trade and compete;
addresses meaningful market access opportunities that goes beyond tariffs to also
address non-tariff barriers; removal harmful sheries subsides as per SDG goal 14; or
addressing tariff escalation and trade distorting subsidies in agriculture; and improving
access conditions for LDCs to boost their exports (targets 11 an 12 of SDG 17).
Exploiting existing trade facilitation agreement and frameworks to reduce trade
costs for SMEs will remain important. E-commerce and online platforms have great
potential for levelling the playing eld between small and large rms in accessing global
markets. Regulation at the international level may be needed to ensure that large
e-commerce platforms do not operate in a monopolistic manner, for example through
exclusivity agreements or abusive pricing. Equally important, development assistance
linked with trade commitments, as demonstrated in the WTO trade facilitation agreement,
is also an option. In addition to facilitating trade, aid-for-trade should be aimed to increasing
productive capacity. In this regard, foreign investments should play a more important role
in increasing long-lasting productive capacity in developing countries, particularly LDCs
and small island developing States.
The impact that bilateral and regional trade agreements can have in promoting
more equal opportunities for workers and rms has been discussed above. Regional
trade agreement as well as South-South cooperation and regional economic integration
processes provide a viable avenue to developing countries in boosting regional production
and trade in support of industrialization, growth and inclusive development. New steps
44
Trade Policies for Combating Inequality
being taken in this direction include the signing, ratication and entry into force at the
end of May 2019 of the Agreement establishing the African Continental Free Trade Area.
A nal area for cooperation at the multilateral level has to do with taxation. Egger,
Nigai and Strecker (2019) examine the effects of globalization on the distribution of taxes
in a sample of high-income countries. They nd that prior to 1994 countries that were
more open with regards to trade and factor mobility, also taxed more progressively high-
income individuals. They explain this with the fact that the reallocation of resources implied
by globalization requires adjustment, which itself increases the demand for the provision
of public goods. To satisfy the larger demand for public goods in more open economies
higher taxes are needed (see Rodrik, 1998). Prior to 1994, the higher taxes in more open
economies were collected on the high-income individuals. After 1994, the intensication
of globalization and the higher mobility of both workers and capital imposed a limit on the
extent at which high-income individuals could be taxed. This led to a signicant decline
in the taxes paid by the top 1 per cent, while taxes paid by the middle class increased
(see Figure 17).
In other words, before the 1990s tax redistribution was used to mitigate the
adverse effects of trade openness on income inequality. After the 1990s, the relatively
greater mobility of top earners and corporations across countries led to a reduction in
their income tax rate, while leaving the needs for public goods unchanged. As such, the
middle class paid the bill. Thus, part of the recent increase in after tax income inequality is
due to a less redistributive tax system that is itself induced by globalization. Cooperation
at the global level, on income taxation with the aim of harmonizing and reducing the
incentives for tax-avoidance may help bring back the original redistributive nature of
tax systems. This will not only directly help reduce after-tax income inequality, but also
better fund some of the complementary programmes that are needed to ensure that
international trade is consistent with SDG 10.
Equal opportunities to rms, workers and countries
45
Figure 17: Corporate taxation and labour income taxation for top 1 per cent and
median worker
ϭϱ
ϭϲ
ϭϳ
ϭϴ
ϯϬ
ϯϱ
ϰϬ
ϰϱ
ϭϵϴϬ ϭϵϴϱ ϭϵϵϬ ϭϵϵϱ ϮϬϬϬ ϮϬϬϱ
ŽƌƉŽƌĂƚĞĂŶĚƚŽƉͲϭйŝŶĐŽŵĞƚĂdžƌĂƚĞƐ
ŽƌƉŽƌĂƚĞƚĂdžƌĂƚĞ;ůĞĨƚƐĐĂůĞͿ
dŽƉϭйŝŶĐŽŵĞƚĂdžƌĂƚĞ;ůĞĨƚƐĐĂůĞͿ
DĞĚŝĂŶ/ŶĐŽŵĞƚĂdžƌĂƚĞ;ƌŝŐŚƚƐĐĂůĞͿ
Source: Egger, Nigai and Strecker (2019).
47
6. CONCLUDING REMARKS ON POLICY
ORIENTATION
Trade reforms have contributed to reducing income inequality between countries.
They have, however, also been accompanied by a polarization of the distribution of
income within many countries. The latter is possibly the main cause behind the current
backlash against international trade. Resorting to protectionism to reduce trade is not
a solution to addressing the adverse distributional consequences of trade. Trade is a
catalyst for economic growth and development as recognized in the SDGs. Accordingly,
to respond to inequality, rather than focusing exclusively on productivity and economic
growth, policymakers need to focus on encouraging trade and on ensuring that the
benets brought by international trade must become more inclusive and responsive to
the imperatives laid out in the Sustainable Development Goals.
Two broad policy orientations emerge. First, in a context of rising inequalities within
countries, the distributional effects of trade must be a rst-order concern. Trade policy
should not only pursue efciency gains but also aim to help small rms and producers;
marginalized workers, women and youth; and poorer countries to more equally benet
from international trade. Second, what is needed are not policy actions which restrict
trade but policies that would make international trade more inclusive so to give access
to a larger number of especially marginalized peoples, rms and countries to the benets
offered by global markets.
48
Trade Policies for Combating Inequality
BIBLIOGRAPHY
Acemoglu D (2002). Technical Change, Inequality and the Labor Market. Journal of
Economic Literature 40, 7-72.
Agrawal A, Lacetera N and Lyons E (2016). Does standardized information in online
markets disproportionately benet job applicants from less developed countries?
Journal of International Economics 103, 1-12.
Akerlof G and Yellen J (1990). The fair wage-effort hypothesis and unemployment
Quarterly Journal of Economics,105: 255-283.
Amoranto G, Brooks D and Chun N (2010). Services Liberalization and Wage Inequality
in the Philippines. ADB Economics Working Paper Series 239.
Arnold J, Javorick B, Lipscomb M and Mattoo A (2016). Services reform and manufacturing
performance: evidence from India. Economic Journal (126), 1-39.
Atkin D (2016). Endogeneous skill acquisition and export manufacturing in Mexico,
American Economic Review 106(8), 2046-2085.
Autor D, Levy F and Murnane R (2003). The Skill Content of Recent Technical Change: An
Empirical Exploration. Quarterly Journal of Economics 118, 1279-1334.
Baland J-M and Duprez C (2007). Made in Dignity: The Impact of Social Labels. Working
Papers1001, University of Namur.
Baland J-M and Duprez C (2007a). Are Fair Trade Labels Effective Against Child Labour?
CEPR discussion paper 6259.
Balineau G (2013). Disentangling the Effects of Fair Trade on the Quality of Malian Cotton,
World Development 44(C), 241-255.
Bas M and Paunov C (2019). What gains and distributional implications result from trade
liberalization? UNU-MERIT working paper series 2019-003.
Baumgartner D (2013). Exporters and the rise in wage inequality: evidence from German
link employer-employee data. Journal of International Economics 90, 201-217.
Bernard A and Jensen B (1997). Exporters, Skill Upgrading, and the Wage Gap. Journal
of International Economics 42, 3-31.
Bhagwati J (1995). Trade Liberalization and ‘Fair Trade’ Demands: Addressing the
Environmental and Labour Standards Issues.World Economy 18(6), 745-759.
Bourguignon F (2016). The globalization of inequality. Princeton University Press.
Equal opportunities to rms, workers and countries
49
Burnstein A and Vogel J (2017). International trade, technology and the skill premium,
Journal of Political Economy 125(5), 1356-1412.
Burnstein A, Morales E and Vogel J (2016). Changes in between-group inequality:
Computers, occupations and international trade. UCLA, Mimeo.
Carrère C, Olarreaga M and Raess D (2018). Labor clauses in trade agreements: worker
protection or protectionism? University of Geneva, mimeo.
Cashore B (2002), “Legitimacy and the Privatization of Environmental Governance:
How Non-State Market-Driven (NSMD) Governance Systems Gain Rule-Making
Authority”. Governance 15(4), 503-529.
Cassette A, Fleury N and Petit S (2012). Income Inequalities and International Trade in
Goods and Services: Short- and Long-Run Evidence. The International Trade
Journal 26(3), 223-254.
Chisik R and Emami Namini J (2017). International trade and labor market discrimination.
Ryerson University, mimeo.
Collier P (2007). The bottom billion. Oxford University Press.
Crozet M and Milet M (2017). The servitization of French manufacturing rms. In Factory-
free economy: outsourcing, servitization, and the future of manufacturing, by
Lionel Fontagné and Anne Harrisson (editors), Oxford University Press.
Cruz M (2014). Essays in trade and development economics. Phd dissertation: Graduate
Institute of International and Development Studies, Geneva.
Cruz M, Milet E and Olarreaga M (2018). Online exports and the skilled-unskilled wage
gap. University of Geneva, mimeo.
CUTS (2018). Internationalisation of micro and small enterprises through e-commerce.
CUTS International, Jaipur.
Danziger E (2017). Skill acquisition and the dynamics of trade induced inequality. Journal
of International Economics 107, 60-74.
De Falcis E, Rollo V, Solleder O and Ticku R (2019). What bang for the buck? Export
promotion and trade extensive margin. International Trade Center working paper
series 02-2018.
De Loecker J, Goldberg P, Khanhelwal A and Pavcnik N (2016). Price, markups and trade
reform. Econometrica 84(2), 445-510.
50
Trade Policies for Combating Inequality
De Melo J and Olarreaga M (2019). Trade related institutions and Development. In Economic
Development and Institutions, by Jean-Marie Baland, François Bourguignon and
Jean-Philippe Platteau, and Thierry Verdier (Eds.). Oxford University Press.
Dinopoulos E and Segerstrom P (1999). A Schumpeterian Model of Protection and
Relative Wages. American Economic Review 89:3, 450-72.
Dix-Carneiro R (2014). Trade Liberalization and labor market dynamics. Econometrica
82, 825-885.
Dragusanu R, Giovanucci D and Nunn N (2014). The Economics of Fair Trade. Journal of
Economics Perspectives 28(3), 217-236.
Dragusanu R and Nunn N (2018). The Impacts of Fair Trade Certication: Evidence from
Coffee Producers in Costa Rica. NBER working paper 24260.
Dynarski S, Michelmore K, Libassi CJ and Owen S (2018). Closing the gap: the effect of
a targeted, tuition free promise on college choices of high-achieving, low-income
students. NBER working Paper 25349.
Ederington J, Minier J and Troske K (2009). Where the Girls Are: Trade and Labor Market
Segregation in Colombia. IZA Discussion Paper No. 4131.
Egger H, Egger P and Kreickemeier U (2013). Trade, wages and prots. European
Economic Review 64, 332-350.
Egger H and Kreickemeier U (2009). Firm heterogeneity and the labor market effects of
trade liberalization. International Economic Review 50(1), 187-216.
Egger H and Kreickemeier U (2012). Fairness, trade and inequality. Journal of International
Economics 86, 184-196.
Egger P, Nigai S and Strecker N(2019).“The Taxing Deed of Globalization.”American
Economic Review 109(2):353-90.
Fagjelbaum P and Khandelwal A (2016). Measuring the unequal gains from trade.
Quarterly Journal of Economics 131(3), 1113-1180.
Feenstra R and Hanson G (1996). Foreign Investment, Outsourcing and Relative Wages.
In R.C. Feenstra, G.M. Grossman and D.A. Irwin, eds., The Political Economy of
Trade Policy: Papers in Honor of Jagdish Bhagwati. Cambridge, MA: MIT Press.
Feenstra R and Hanson G (1997). Foreign Direct Investment and Relative Wages:
Evidence from Mexico’s Maquiladoras. Journal of International Economics 42 (3-
4), 371-393.
Equal opportunities to rms, workers and countries
51
Feenstra R and Hanson G (1999). The Impact of Outsourcing and High-Technology
Capital on Wages: Estimates for the U.S., 1979-1990. Quarterly Journal of
Economics, 114(3), 907-940.
Felbermayr G, Impulliti G and Prat J (2018). Firm dynamics and residual inequality in open
economies. Journal of the European Economic Association 16(5), 1476-1535.
Fischer C and Lyon TP (2014). Competing Environmental Labels, Journal of Economics
& Management Strategy 23(3), 692-716.
Freund C and Pierola M (2015). Exporter superstars. Review of Economics and Statistics
97(5), 1023-1032.
Fues T and GrimmS (2017). Low-income countries powers begin shaping sustainability
standards.
https://www.die-gdi.de/en/the-currentcolumn/article/low-income
countriesern-powers-begin-shapingsustainability-standards-1/
Fugazza M, Mrazova M, Olarreaga M and Ugarte C (2019). On the heterogeneous effects
of market-access barriers: Evidence from small and large Peruvian exporters.
Mimeo, UNCTAD
Glickman L (2004). Buy for the Sake of the Slave: Abolitionism and the Origins of American
Consumer Activism. American Quarterly 56(4), 889-912.
Goldberg P and Pavcnik N (2007). Distributional effects of globalization in developing
countries. Journal of Economic Literature 45(1), 39–82.
Grossman G and Helpman E (2018). Growth, Trade and Inequality. Econometrica 86,
37-83.
Grossman G and Rossi-Hansberg E (2008). Trading Tasks: A Simple Theory of Offshoring.
American Economic Review 98(5), 1978-1997.
Gupta A (2015). Effect of trade liberalization on gender inequality. Indian Statistical
Institute, mimeo.
Harrison A, McLaren J and McMillan M (2010). Recent ndings on trade and inequality.
NBER working paper 16425.
Helpman E (2018). Globalization and Inequality. Harvard University Press.
Helpman E, Itskhoki O, Muendler M-A and Redding S (2017). Trade and Inequality: from
theory to estimation. Review of Economic Studies 84, 357-405.
Helpman E, Itskhoki O and Redding S (2010). Inequality and unemployment in a global
economy. Econometrica 78(4), 1239-1283.
52
Trade Policies for Combating Inequality
Huber K and Winkler E (2019). All you need is love? Trade shocks, inequality and risk-
sharing between partners. European Economic Review 111, 305-335.
Hui Xiang (2019). Facilitating Inclusive Growth Trade: Evidence from a Field Experiment.
Management Science, forthcoming.
Janvry A de, McIntosh C and Sadoulet E (2015). Fair Trade and Free Entry: Can a
Disequilibrium Market Serve as a Development Tool? The Review of Economics
and Statistics 97(3), 567-573.
Jones R I (1971). A Three-factor Model in Theory, Trade and History. In J. Bhagwati
et al., eds: Trade, Balance of Payments and Growth: Essays in Honor of C.P.
Kindleberger. Amsterdam: High-income countries Holland.
Juhn C, Ujhelyi G and Villega-Sanchez C (2014). Men, women and machines: how trade
impacts gender inequality. Journal of Development Economics 106, 176-193.
Kee H L, Nicita A and Olarreaga M (2009). Estimating trade restrictiveness indices.
Economic Journal 119, 172–199.
Kinuthia B and Kulundu Manda D (2019). Exports, skills and wage inequality in Kenyan
manufacturing rms. Mimeo, University of Nairobi.
Kinuthia B and Olarreaga M (2019). Exports, wages and the decline of labor unions:
evidence from Kenya. Mimeo, University of Nairobi.
Kuznets S (1955). Economic growth and income inequality. American Economic Review
45(1), 1-28.
Lakner C and Milanovic B (2016). Global Income Distribution: From the Fall of the Berlin
Wall to the Great Recession. World Bank Economic Review 30(2), 203-232.
Liu E, Mian A and Su A (2019). Low interest rate, market power and productivity growth.
NBER working paper 25505.
Luo R (2017). Skill Premium and Technological Change in the very Long Run: 1300-1914.
Discussion Papers in Economics 17/09, University of Leicester.
Maggi G, Mràzovà M and Neary P (2018). Choked By Red Tape? The Political Economy
of Wasteful Trade Barriers. NBER Working Paper 24739.
Mayer T and Ottaviano G (2007). The happy few: the internationalization of European
rms. Bruegel blueprint series vol. III.
Mehta A and Hasan R (2012). The effects of trade and services liberalization on wage
inequality in India. International Review of Economics and Finance 23, 75-90.
Equal opportunities to rms, workers and countries
53
Melitz M (2003). The impact of trade on intra-industry reallocations and aggregate industry
productivity. Econometrica 71, 1695-1725.
Milanovic B (2016). Global Inequality: A New Approach for the Age of Globalization.
Cambridge: Harvard University Press.
Murina M and Nicita A (2017). Trading with conditions. The effects of sanitary and
phytosanitary measures on the agricultural exports from low-income countries.
World Development 40(1), 168-181.
Nicita A, Olarreaga M and Porto G (2014). Pro-poor trade policy in Sub-Saharan Africa.
Journal of International Economics 92, 252-265.
Nicita A and Seiermann J (2016). G20 policies and export performance of least developed
countries. Policy issues in International Trade and Commodities Research Study
Series no. 75. UNCTAD.
Niño-Zarazúa M, Roope L and Tarp F (2017). Global inequality: relatively lower, absolutely
higher. Review of Income and Wealth 63(4), 661-684.
Olarreaga M, Sperlich S and Trachsel V (2019). Exploring the heterogeneous effects of
export promotion. World Bank Economic Review, forthcoming.
Ottaviano G and Surevato D (2018). Market power and wage inequality in the new global
economy. Bocconi University, mimeo.
Pande M (2017). The India Story: Impact of private sustainability standards on market
access and sustainable development. UNCTAD research paper no. 9. United
Nations, Geneva.
Pavcnik N (2002). Trade liberalization, exit and productivity improvements: evidence from
Chilean plants. The Review of Economic Studies 69 (1), 245–276.
Pavcnik N (2017). The impact of trade on inequality in developing countries. Dartmouth,
mimeo.
Penello Rial D (2014). Study of average effects of non-tariff measures on trade. Policy
issues in International Trade and Commodities Research Study Series no. 66.
UNCTAD.
Perry G and Olarreaga M (2007). Trade liberalization, inequality and poverty in Latin
American. In F. Bourguignon and Boris Pleskovic, eds. Beyond Transition.
Pieters J (2018). Trade liberalization and gender inequality. IZA discussion paper.
Podhorsky A (2013). Certication Programs and High-income countries–Low-income
countries Trade. Journal of Public Economics 108, 90–104.
54
Trade Policies for Combating Inequality
Podhorsky A (2015). A Positive Analysis of Fair Trade Certication. Journal of Development
Economics 116, 169–185.
Raess D and Sari D (2018). Do labor provisions in PTAs reduce labor rights violations?
The role of institutionalized cooperation. Paper presented at the Workshop “Past
and Future of Labor Provisions in the Context of Trade,” Harvard Law School,
August 31st.
Ravallion M (2018a). Inequality and Globalization: a review essay. Journal of Economic
Literature 56(2), 620-642.
Ravallion M (2018b). What might explain today’s conicting narratives on global inequality?
UNU-WIDER Working paper 2018/141.
Rodrik D (1998). Why Do More Open Economies Have Bigger Governments? Journal of
Political Economy 106(6), 997-1032.
Rodrik D (2016). Premature deindustrialization. Journal of Economic Growth 21(1), 1-33.
Rodrik D (2018). New Technologies, Global Value Chains, and the Developing Economies.
Pathways for Prosperity Commission Background Paper Series; no. 1. Oxford.
Smith A (2018). Trade and Inequality: educational and occupational choice matters.
Boston University, mimeo.
Suominen K (2017). The silver bullet for fueling small business exports in the e-commerce
area: a plurilateral on de minimis. Mimeo.
Surevato D and Ottaviano G (2019). Market Power and Wage Inequality in the New Global
Economy. Paper presented at the Villars workshop on International Trade.
Thoenig M and Verdier T (2003). A Theory of Defensive Skill-Biased Innovation and
Globalization.American Economic Review,93(3):709-728.
UNCTAD (2015). Information Economy Report 2015: Unlocking the potential of
E-Commerce for developing countries. UNCTAD/IER/2015.
UNCTAD (2018). Market access, trade and sustainable development: the labor market
channel. Developing Countries in International Trade Studies. United Nations,
Geneva.
UNCTAD (2018a). The African Continental Free Trade Area: the day after the Kigali
summit. Policy Brief no. 67. United Nations, Geneva.
UNCTAD (2018b). Power, platforms and the free trade illusion. Trade and Development
Report. United Nations, Geneva.
Equal opportunities to rms, workers and countries
55
UNFSS (2013). 1st Flagship Report of the United Nations Forum on Sustainability
Standards (UNFSS). UNFSS. United Nations Geneva
UNFSS (2016). Meeting sustainability goals: voluntary sustainability standards and the
role of the government. Second Flagship Report of the United Nations Forum on
Sustainability Standards. United Nations, Geneva.
UNFSS (2018). Voluntary sustainability standards, trade and sustainable development.
Third Flagship Report of the United Nations Forum on Sustainability Standards.
United Nations, Geneva.
Urata S and Narjoko D (2017). International trade and inequality. ADBI working paper
675.
Volpe C and Carballo J (2008). Is export promotion effective in developing countries?
Firm-level evidence on the intensive and the extensive margins of exports. Journal
of International Economics 76, 89-106.
Volpe C and Carballo J (2010). Beyond the average effects: The distributional impacts
of export promotion programs in developing countries. Journal of Development
Economics 92, 201-214.
Volpe C and Carballo J (2010a). Export promotion: bundled services work better. World
Economy 33, 1718-1756.
Volpe C, Carballo J and Garcia PM (2012). Public programs to promote rms’ exports
in developing countries: Are there heterogeneous effects by size categories?
Applied Economics 44(4), 471–491.
Wacziarg R and Welch K (2008). Trade Liberalization and Growth: New Evidence. World
Bank Economic Review 22(2), 187-231.
Wood A (1994). High-income countries-Low-income countries Trade, Employment and
Inequality: Changing Fortunes in a Skill-Driven World. Oxford University Press.
Wood A (2002). Globalization and wage inequalities: A synthesis of three theories. Review
of World Economics (Weltwirtschaftliches Archiv) 138(1), 54–82.
World Inequality Report, 2018.
https://wir2018.wid.world/
Wright G (2014). Revisiting the employment impact of offshoring. European Economic
Review 66, 63-83.
WTO (2018a). Special and differential treatment provisions in WTO agreements and
decisions. Note by the secretariat, WT/COMTD/W/239.
56
Trade Policies for Combating Inequality
WTO (2018b). Mainstreaming trade to attain the Sustainable Development Goals. ISBN
978-92-870-4272-9 (print). ISBN 978-92-870-4273-6 (web). WTO Secretariat.
WWF (2017). SDGs Mean Business: How Credible Standards Can Help Companies
Deliver the 2030 Agenda, WWF-ISEAL joint report. Retrieved from http://www.
standardsimpacts.org/sites/default/les/WWF_ISEAL_SDG_2017.pdf
Yahmed S B (2017). Gender wage discrimination and trade openness: prejudiced
employers in an open industry. ZEW discussion paper.
Yang H (2018). Dynamic trade, education and intergenerational inequality. Pennsylvania
State University, mimeo.
Photo credit: Adobe Stock © chrisharvey
978-92-1-112961-8
Printed at United Nations, Geneva
1914316 (E)–August 2019–772
UNCTAD/DITC/TAB/2019/6
United Nations publication
Sales No. E.19.II.D.21
