Department of Economics
77 Massachusetts Avenue
Cambridge, MA 02139
Institutional Affiliation: Massachusetts Institute of Technology
NBER Working Papers and Publications
|May 2017||The Fall of the Labor Share and the Rise of Superstar Firms|
with David Autor, David Dorn, Lawrence F. Katz, John Van Reenen: w23396
The fall of labor's share of GDP in the United States and many other countries in recent decades is well documented but its causes remain uncertain. Existing empirical assessments of trends in labor's share typically have relied on industry or macro data, obscuring heterogeneity among firms. In this paper, we analyze micro panel data from the U.S. Economic Census since 1982 and international sources and document empirical patterns to assess a new interpretation of the fall in the labor share based on the rise of “superstar firms.” If globalization or technological changes advantage the most productive firms in each industry, product market concentration will rise as industries become increasingly dominated by superstar firms with high profits and a low share of labor in firm value-added an...
|January 2017||Concentrating on the Fall of the Labor Share|
with David Autor, David Dorn, Lawrence F. Katz, John Van Reenen: w23108
The recent fall of labor’s share of GDP in numerous countries is well-documented, but its causes are poorly understood. We sketch a “superstar firm” model where industries are increasingly characterized by “winner take most” competition, leading a small number of highly profitable (and low labor share) firms to command growing market share. Building on Autor et al. (2017), we evaluate and confirm two core claims of the superstar firm hypothesis: the concentration of sales among firms within industries has risen across much of the private sector; and industries with larger increases in concentration exhibit a larger decline in labor’s share.
Published: David Autor & David Dorn & Lawrence F. Katz & Christina Patterson & John Van Reenen, 2017. "Concentrating on the Fall of the Labor Share," American Economic Review, American Economic Association, vol. 107(5), pages 180-185, May. citation courtesy of