Number of unfair labor practices (ULP) charges against employers: 1950–1990
| 8(a)1 | |
|---|---|
| 1950 | 4472 |
| 1952 | 4306 |
| 1954 | 4373 |
| 1956 | 3522 |
| 1958 | 6068 |
| 1960 | 7723 |
| 1962 | 9231 |
| 1964 | 10695 |
| 1966 | 10902 |
| 1968 | 11892 |
| 1970 | 13601 |
| 1972 | 17733 |
| 1974 | 17978 |
| 1976 | 23496 |
| 1978 | 27056 |
| 1980 | 31281 |
| 1981 | 31273 |
| 1982 | 27749 |
| 1983 | 28995 |
| 1984 | 24852 |
| 1986 | 24084 |
| 1988 | 22266 |
| 1990 | 24075 |
Source: National Labor Review Board annual reports, 1950–1990 8(a)1 unfair labor practice charges. For years 1954–1990, see Table 2 and Table 4. For 1950, see Table 3A and Table 10. For 1952, see Table 2 and Table 3.