Impact of labor market concentration on wages, 1977–2009

Period Coefficient in HHI* HHI Wage impact
1977–1981 0.044 0.698 3.1%
1982–1986 0.038 0.714 2.7%
1992–1996 0.044 0.717 3.2%
1997–2001 0.047 0.719 3.2%
2002–2009 0.033 0.756 3.6%
Change 1977–2009 0.058 0.5%

* Herfindahl-Hirschman index

Source: Benmelech, Bergman, and Kim 2018 (Figure 1 and Table 5, panel B)

View the underlying data on epi.org.