This paper analyzes the extent of income inequality from a global perspective, its drivers, and what to do about it. The drivers of inequality vary widely amongst countries, with some common drivers being the skill premium associated with technical change and globalization, weakening protection for labor, and lack of financial inclusion in developing countries. We find that increasing the income share of the poor and the middle class actually increases growth while a rising income share of the top 20 percent results in lower growth—that is, when the rich get richer, benefits do not trickle down. This suggests that policies need to be country specific but should focus on raising the income share of the poor, and ensuring there is no hollowing out of the middle class. To tackle inequality, financial inclusion is imperative in emerging and developing countries while in advanced economies, policies should focus on raising human capital and skills and making tax systems more progressive.

Deals with income distribution methods and their economic applications.

The process of globalization has implications for human rights, though the relationship between the two is not always clear. How does globalization effect human rights in local contexts? Globalization, Poverty, and Income Inequality examines the relationships between globalization and trade liberalization, and poverty and income inequality, using Indonesia as a case study. This empirically rigorous investigation finds that although increased trade tends to reduce poverty, there are exceptions. For example, globalization via trade in certified organic coffee has not helped low-income farmers. And globalized access to treatments for visual problems has been countermanded by rising digitization that negatively affects the visually disabled poor. Ultimately, the chapters describe an ambiguous relationship between trade liberalization and inequality, both of which can increase or decrease in proportion to one another depending on region and sector. This empirically driven work provides a nuanced view of the trade-poverty relationship, contributing balanced testimony to policy debates being held internationally.

This paper demonstrates that high and rising corruption increases income inequality and poverty by reducing economic growth, the progressivity of the tax system, the level and effectiveness of social spending, and the formation of human capital, and by perpetuating an unequal distribution of asset ownership and unequal access to education. These findings hold for countries with different growth experiences, at different stages of development, and using various indices of corruption. An important implication of these results is that policies that reduce corruption will also lower income inequality and poverty.

The gap between the richest and poorest Americans has grown steadily over the last thirty years, and economic inequality is on the rise in many other industrialized democracies as well. But the magnitude and pace of the increase differs dramatically across nations. A country's political system and its institutions play a critical role in determining levels of inequality in a society. Democracy, Inequality, and Representation argues that the reverse is also true—inequality itself shapes political systems and institutions in powerful and often overlooked ways. In Democracy, Inequality, and Representation, distinguished political scientists and economists use a set of international databases to examine the political causes and consequences of income inequality. The volume opens with an examination of how differing systems of political representation contribute to cross-national variations in levels of inequality. Torben Iverson and David Soskice calculate that taxes and income transfers help reduce the poverty rate in Sweden by over 80 percent, while the comparable figure for the United States is only 13 percent. Noting that traditional economic models fail to account for this striking discrepancy, the authors show how variations in electoral systems lead to very different outcomes. But political causes of disparity are only one part of the equation. The contributors also examine how inequality shapes the democratic process. Pablo Beramendi and Christopher Anderson show how disparity mutes political voices: at the individual level, citizens with the lowest incomes are the least likely to vote, while high levels of inequality in a society result in diminished electoral participation overall. Thomas Cusack, Iverson, and Philipp Rehm demonstrate that uncertainty in the economy changes voters' attitudes; the mere risk of losing one's job generates increased popular demand for income support policies almost as much as actual unemployment does. Ronald Rogowski and Duncan McRae illustrate how changes in levels of inequality can drive reforms in political institutions themselves. Increased demand for female labor participation during World War II led to greater equality between men and women, which in turn encouraged many European countries to extend voting rights to women for the first time. The contributors to this important new volume skillfully disentangle a series of complex relationships between economics and politics to show how inequality both shapes and is shaped by policy. Democracy, Inequality, and Representation provides deeply nuanced insight into why some democracies are able to curtail inequality—while others continue to witness a division that grows ever deeper.

Is there a tradeoff between raising growth and reducing inequality and poverty? This paper reviews the theoretical and empirical literature on the complex links between growth, inequality, and poverty, with causation going in both directions. The evidence suggests that growth can be effective in reducing poverty, but its impact on inequality is ambiguous and depends on the underlying sources of growth. The impact of poverty and inequality on growth is likewise ambiguous, as several channels mediate the relationship. But most plausible mechanisms suggest that poverty and inequality reduce growth, at least in the long run. Policies play a role in shaping these relationships and those designed to improve equality of opportunity can simultaneously improve inclusiveness and growth.

The Fund has recognized in recent years that one cannot separate issues of economic growth and stability on one hand and equality on the other. Indeed, there is a strong case for considering inequality and an inability to sustain economic growth as two sides of the same coin. Central to the Fund’s mandate is providing advice that will enable members’ economies to grow on a sustained basis. But the Fund has rightly been cautious about recommending the use of redistributive policies given that such policies may themselves undercut economic efficiency and the prospects for sustained growth (the so-called “leaky bucket” hypothesis written about by the famous Yale economist Arthur Okun in the 1970s). This SDN follows up the previous SDN on inequality and growth by focusing on the role of redistribution. It finds that, from the perspective of the best available macroeconomic data, there is not a lot of evidence that redistribution has in fact undercut economic growth (except in extreme cases). One should be careful not to assume therefore—as Okun and others have—that there is a big tradeoff between redistribution and growth. The best available macroeconomic data do not support such a conclusion.

This state-of-the-art volume presents comparative, empirical research on a topic that has long preoccupied scholars, politicians, and everyday citizens: economic inequality. While income and wealth inequality across all populations is the primary focus, the contributions to this book pay special attention to the middle class, a segment often not addressed in inequality literature. Written by leading scholars in the field of economic inequality, all 17 chapters draw on microdata from the databases of LIS, an esteemed cross-national data center based in Luxembourg. Using LIS data to structure a comparative approach, the contributors paint a complex portrait of inequality across affluent countries at the beginning of the 21st century. The volume also trail-blazes new research into inequality in countries newly entering the LIS databases, including Japan, Iceland, India, and South Africa.

This book studies the structural inequalities between states as they evolve and influence the political process, analyzing various forms of political violence, the dissolution of states, and the sources of cooperation between states. The ultimate genesis of democracy is shown to be a consequence of the processes detailed in the book.

For anyone wanting to learn, in practical terms, how to measure, describe, monitor, evaluate, and analyze poverty, this Handbook is the place to start. It is designed to be accessible to people with a university-level background in science or the social sciences. It is an invaluable tool for policy analysts, researchers, college students, and government officials working on policy issues related to poverty and inequality.