Appendix Table 1

Data on the erosion of union membership: Trends in union membership density among private-sector workers, by gender and education, 1979–2013

1979 1983 1993 2003 2013 Change 1979–2013
Men
All workers 34% 25% 17% 12% 10% 24%
Workers without a college degree 38% 29% 20% 14% 11% 27%
Workers with a high school diploma or less 39% 31% 21% 14% 11% 28%
Women
All workers 16% 12% 8% 7% 6% 10%
Workers without a college degree 16% 13% 9% 7% 6% 10%
Workers with a high school diploma or less 18% 14% 10% 7% 6% 12%

Notes: The table shows the proportion of each group that belonged to a union in each year. The sample is restricted to full-time workers in the private sector ages 16 to 64. See the text and Methodological Appendix for details on the analysis.

Source: Authors’ compilations from the Current Population Survey (CPS) May Supplement microdata and CPS Outgoing Rotation Group microdata.

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