Labor Income Share

This book is about labor income share, which measures the share of national income paid in wages. The global share of income going towards labor is declining, which suggests a more unequal distribution of income. This has sparked debates about fair distribution of personal incomes among academics and policymakers alike. This book joins the discussion by bringing together recent developments in theoretical and empirical research on labor income share and novel insights on the measurement of the labor income share. The aim of this book is to help design policies to reduce inequality and provide useful knowledge to academics, policymakers from government agencies, policy aides in research institutions and think tanks, and broader audiences from public and private organizations.

This is the first study that puts together a comprehensive and in-depth analysis of the drivers of the labor income share across a number of countries in Asia. This book provides an insightful companion to the study of labor income shares that plays a vital role in understanding the relationship between national income and personal income, and the relationship between wage inequality and wealth inequality. The timing of the book is ideal, as the ongoing debate over a global decline in the labor income share is far from settled. To this extent, evidence from the Asian countries is mixed. The labor income share in some Asian countries has been rising since the 1990s. The purpose of this edited volume is to gain more insights on the potential drivers of the Asian experience. The first half of the book pays attention to the measurement problems related to the earnings of self-employed and workers in the informal sector. Then it puts together country case studies examining a wide range of factors driving the labor income share in Asia.

This volume seeks to go beyond the microeconomic view of wages as a cost having negative consequences on a given firm, to consider the positive macroeconomic dynamics associated with wages as a major component of aggregate demand.

This paper documents the downward trend in the labor share of global income since the early 1990s, as well as its heterogeneous evolution across countries, industries and worker skill groups, using a newly assembled dataset, and analyzes the drivers behind it. Technological progress, along with varying exposure to routine occupations, explains about half the overall decline in advanced economies, with a larger negative impact on middle-skilled workers. In emerging markets, the labor share evolution is explained predominantly by global integration, particularly the expansion of global value chains that contributed to raising the overall capital intensity in production.

This is an update of OECD 2006 "Understanding National Accounts". It contains new data, new chapters and is adapted to the new systems of national accounts, SNA 2008 and ESA 2010.

The U.S. labor share of income has been on a secular downward trajectory since the beginning of the new millennium. Using data that are disaggregated across both state and industry, we show the decline in the labor share is broad-based but the extent of the fall varies greatly. Exploiting a new data set on the task characteristics of occupations, the U.S. input-output tables, and the Current Population Survey, we find that in addition to changes in labor institutions, technological change and different forms of trade integration lowered the labor share. In particular, the fall was largest, on average, in industries that saw: a high initial intensity of “routinizable” occupations; steep declines in unionization; a high level of competition from imports; and a high intensity of foreign input usage. Quantitatively, we find that the bulk of the effect comes from changes in technology that are linked to the automation of routine tasks, followed by trade globalization.

Labor market deregulation, intended to boost productivity and employment, is one plausible, yet little studied, driver of the decline in labor shares that took place across most advanced economies since the early 1990s. This paper assesses the impact of job protection deregulation in a sample of 26 advanced economies over the period 1970-2015, using a newly constructed dataset of major reforms to employment protection legislation for regular contracts. We apply the local projection method to estimate the dynamic response of the labor share to our reform events at both the country and the country-industry levels. For the latter, we employ a differences-in-differences identification strategy using two identifying assumptions grounded in theory—namely that job protection deregulation should have larger negative effects in industries characterized by (i) a higher “natural” propensity to adjust the workforce, and (ii) a lower elasticity of substitution between capital and labor. We find a statistically significant, economically large and robust negative effect of deregulation on the labor share. In particular, illustrative back-of-the-envelope calculations suggest that job protection deregulation may have contributed about 15 percent to the average labor share decline in advanced economies. Together with existing evidence regarding the macroeconomic gains from job protection and other labor market reforms, our results also point to the need for policymakers to address efficiency-equity trade-offs when designing such reforms.