Income inequality is rising. A quarter of a century ago, the average disposable income of the richest 10% in OECD countries was around seven times higher than that of the poorest 10%; today, it's around 9½ times higher. Why does this matter? Many fear this widening gap is hurting individuals, societies and even economies. This book explores income inequality across five main headings. It starts by explaining some key terms in the inequality debate. It then examines recent trends and explains why income inequality varies between countries. Next it looks at why income gaps are growing and, in particular, at the rise of the 1%. It then looks at the consequences, including research that suggests widening inequality could hurt economic growth. Finally, it examines policies for addressing inequality and making economies more inclusive.

“One of the world’s most inspired and unusual poets . . . [Seidel’s] poems are a triumph of cosmic awe in the face of earthly terror.” —Hillel Italie, USA Today Frederick Seidel has been called many things. A “transgressive adventurer,” “a demonic gentleman,” a “triumphant outsider,” “a great poet of innocence,” and “an example of the dangerous Male of the Species,” just to name a few. Whatever you choose to call him, one thing is certain: “he radiates heat” (The New Yorker). Now add to that: the poet of aging and decrepitude. Widening Income Inequality, Seidel’s new poetry collection, is a rhymed magnificence of sexual, historical, and cultural exuberance, a sweet and bitter fever of Robespierre and Obamacare and Apollinaire, of John F. Kennedy and jihadi terror and New York City and Italian motorcycles. Rarely has poetry been this true, this dapper, or this dire. Seidel is “the most poetic of the poets and their leader into hell.”

This volume brings together an exciting range of new studies of top incomes in a wide range of countries from around the world. The studies use data from income tax records to cast light on the dramatic changes that have taken place at the top of the income distribution. The results cover 22 countries and have a long time span, going back to 1875.

We posit that the relationship between income inequality and economic growth is mediated by the level of equality of opportunity, which we identify with intergenerational mobility. In economies characterized by intergenerational rigidities, an increase in income inequality has persistent effects—for example by hindering human capital accumulation— thereby retarding future growth disproportionately. We use several recently developed internationally comparable measures of intergenerational mobility to confirm that the negative impact of income inequality on growth is higher the lower is intergenerational mobility. Our results suggest that omitting intergenerational mobility leads to misspecification, shedding light on why the empirical literature on income inequality and growth has been so inconclusive.

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.

Eight papers, both theoretical and applied, on the concept of equality of opportunity which says that a society should guarantee its members equal access to advantage regardless of their circumstances, while holding them responsible for turning that access into actual advantage by the application of effort.

The sizeable increase in income inequality experienced in advanced economies and many parts of the world since the 1990s and the severe consequences of the global economic and financial crisis have brought distributional issues to the top of the policy agenda. The challenge for many governments is to address concerns over rising inequality while simultaneously promoting economic efficiency and more robust economic growth. The book delves into this discussion by analyzing fiscal policy and its link with inequality. Fiscal policy is the government’s most powerful tool for addressing inequality. It affects households ‘consumption directly (through taxes and transfers) and indirectly (via incentives for work and production and the provision of public goods and individual services such as education and health). An important message of the book is that growth and equity are not necessarily at odds; with the appropriate mix of policy instruments and careful policy design, countries can in many cases achieve better distributional outcomes and improve economic efficiency. Country studies (on the Netherlands, China, India, Republic of Congo, and Brazil) demonstrate the diversity of challenges across countries and their differing capacity to use fiscal policy for redistribution. The analysis presented in the book builds on and extends work done at the IMF, and also includes contributions from leading academics.

A book that rewrites the history of American prosperity and inequality Unequal Gains offers a radically new understanding of the economic evolution of the United States, providing a complete picture of the uneven progress of America from colonial times to today. While other economic historians base their accounts on American wealth, Peter Lindert and Jeffrey Williamson focus instead on income—and the result is a bold reassessment of the American economic experience. America has been exceptional in its rising inequality after an egalitarian start, but not in its long-run growth. America had already achieved world income leadership by 1700, not just in the twentieth century as is commonly thought. Long before independence, American colonists enjoyed higher living standards than Britain—and America's income advantage today is no greater than it was three hundred years ago. But that advantage was lost during the Revolution, lost again during the Civil War, and lost a third time during the Great Depression, though it was regained after each crisis. In addition, Lindert and Williamson show how income inequality among Americans rose steeply in two great waves—from 1774 to 1860 and from the 1970s to today—rising more than in any other wealthy nation in the world. Unequal Gains also demonstrates how the widening income gaps have always touched every social group, from the richest to the poorest. The book sheds critical light on the forces that shaped American income history, and situates that history in a broad global context. Economic writing at its most stimulating, Unequal Gains provides a vitally needed perspective on who has benefited most from American growth, and why.

"The paper presents a nontechnical summary of the current state of debate on the measurement and implications of global inequality (inequality between citizens of the world). It discusses the relationship between globalization and global inequality. And it shows why global inequality matters and proposes a scheme for global redistribution. "--World Bank web site.

Inequality in income, earnings, and wealth has risen dramatically in the United States over the past three decades. Most research into this issue has focused on the causes—global trade, new technology, and economic policy—rather than the consequences of inequality. In Social Inequality, a group of the nation's leading social scientists opens a wide-ranging inquiry into the social implications of rising economic inequality. Beginning with a critical evaluation of the existing research, they assess whether the recent run-up in economic inequality has been accompanied by rising inequality in social domains such as the quality of family and neighborhood life, equal access to education and health care, job satisfaction, and political participation. Marcia Meyers and colleagues find that many low-income mothers cannot afford market-based child care, which contributes to inequality both at the present time—by reducing maternal employment and family income—and through the long-term consequences of informal or low-quality care on children's educational achievement. At the other end of the educational spectrum, Thomas Kane links the growing inequality in college attendance to rising tuition and cuts in financial aid. Neil Fligstein and Taek-Jin Shin show how both job security and job satisfaction have decreased for low-wage workers compared with their higher-paid counterparts. Those who fall behind economically may also suffer diminished access to essential social resources like health care. John Mullahy, Stephanie Robert, and Barbara Wolfe discuss why higher inequality may lead to poorer health: wider inequality might mean increased stress-related ailments for the poor, and it might also be associated with public health care policies that favor the privileged. On the political front, Richard Freeman concludes that political participation has become more stratified as incomes have become more unequal. Workers at the bottom of the income scale may simply be too hard-pressed or too demoralized to care about political participation. Social Inequality concludes with a comprehensive section on the methodological problems involved in disentangling the effects of inequality from other economic factors, which will be of great benefit to future investigators. While today's widening inequality may be a temporary episode, the danger is that the current economic divisions may set in motion a self-perpetuating cycle of social disadvantage. The most comprehensive review of this quandary to date, Social Inequality maps out a new agenda for research on inequality in America with important implications for public policy.