Research Article
Social Insurance and Truncated Benefits: Measuring the Impacts of Workers' Compensation
Table 9
Membership in selected unions.
| | Organization | Thousands of members | | 1955 | 1965 | 1975 | 1979 | 1981 | 1989 |
| | Industrial Workers of America (International Union of) | | 71 | 93 | 92 | 78 | 60 | | Machinists and Aerospace Workers (International Association of) | 627 | 663 | 780 | 664 | 680 | 517 | | Painters and Allied Trades (International Brotherhood of) | 182 | 160 | 160 | 160 | 160 | 128 | | Sheet Metal Workers International (Association) | 50 | 100 | 120 | 120 | 120 | 108 | | Roofers, Waterproofers and Allied Workers (United Union of) | | | | 28 | 31 | 23 | | United Steelworkers of America | 980 | 876 | 1,062 | 964 | 913 | 481 | | AFL-CIO (overall) | 12,622 | 12,919 | 14,070 | 13,621 | 13,602 | 13,556 |
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