NLRB Stats Archive › Annual Reports › FY1991 › Types of unfair labor practices alleged
Types of unfair labor practices alleged
| employers under Sec. 8(a) | employers under Sec. 8(a) | employers under Sec. 8(a) |
|---|---|---|
| A. Charges filed against | ||
| Subsections of Sec. 8(a) Total cases | 23,005 | 100 |
| 8(aX1) .......... | 3,805 | 16.5 |
| 8(a)(1)(2) | 244 | 1.1 |
| WaX1X3) | 8,189 | 35.6 |
| 8(aX1)(4) | 165 | 0.7 |
| 8(a)(1)(5) | 7,398 | 32.2 |
| 8(a)(1)(2)(3) | 176 | 0.8 |
| 8(aX1X2)(4) | 6 | 0 |
| 8(aX1X2)(5) | 99 | 0.4 |
| 8(aX1X3)(4) | 567 | 2.5 |
| 8(a)(1)(3)(5) | 2,076 | 9 |
| 8(aX1X4)(5) | 22 | 0.1 |
| 8(aX1)(2)(3)(4) | 19 | 0.1 |
| 8(aX1)(2)(3)(5) | 110 | 0.5 |
| 8(a)(1)(2X4)(5) . | 1 | 0 |
| 8(aX1)(3)(4)(5) | 101 | 0.4 |
| 8(a)(1)(2)(3)(4X5) | 27 | 1 |
| ' | ' | |
| 8(a)(I)2 | 23,005 | 100 |
| r 8(a)(2) | 682 | 3 |
| 8(a)(3) | 11,265 | 49 |
| 8(aX4) | 908 | 3.9 |
| 8(aX5) . | 9.834 | 42.7 |
| B. Charges filed against unions under Sec. 8(b) | B. Charges filed against unions under Sec. 8(b) | |
| Subsections of Sec. 8(b). | ||
| Total cases | 9,099 | 100 |
| 8(bX1) | 6,137 | 67.4 |
| 8(b)(2) | 61 | 0.7 |
| 8(b)(3) | 174 | 1.9 |
| 8(b)(4) | 967 | 10.6 |
| 8(b)(5) | 7 | 0.1 |
| 8(b)(6) | 11 | 0.1 |
| 8(b)(7) | 211 | 2.3 |
| 8(b)(1)(2) | 1,060 | 11.6 |
| 8(b)(1)(3) | 377 | 4.1 |
| 8(b)(1)(5) | 17 | 0.2 |
| 8(b)(1)(6) | 9 | 0.1 |
| 8(b)(2)(3) | 3 | 0 |
| 8(b)(2X5) | 1 | 0 |
| 8(bX2)(6) | 1 | 0 |
| 8(b)(3)(6) | 1 | 0 |
| 8(bX1)(2)(3) | 50 | 0.5 |
| 8(bX1)(2)(5) | 3 | 0 |
| 8(b)(1)(2)(6) | 3 | 0 |
| 8(b)(1)(3X5) | 3 | 0 |
| 8(b)(1)(3X6) | 1 | 0 |
| 8(b)(1)(2X5)(6) | 2 | 0 |
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Source data: U.S. NLRB Annual Reports (public domain). Reconstruction by NLRB Stats Archive. Updated June 2026.