NLRB Stats Archive › Annual Reports › FY1973 › Types of unfair labor practices alleged
Types of unfair labor practices alleged
| Section / Subsection | Number of cases showing specific allegations | Percent of total cases |
|---|---|---|
| A. Charges filed against employers under Sec. 8(a) | ||
| Subsections of Sec. 8(a) — Total cases | 17,361 | 100 |
| 8(a)(1) | 2,160 | 12.4 |
| 8(a)(2) | 285 | 1.6 |
| 8(a)(3) | 8,808 | 50.7 |
| 8(a)(4) | 97 | 0.6 |
| 8(a)(5) | 3,745 | 21.6 |
| 8(a)(1)(2) | 205 | 1.2 |
| 8(a)(1)(4) | 9 | 0.1 |
| 8(a)(1)(5) | 98 | 0.6 |
| 8(a)(2)(3) | 295 | 1.7 |
| 8(a)(3)(4) | 1,508 | 8.7 |
| 8(a)(3)(5) | 6 | 0 |
| 8(a)(1)(2)(3) | 14 | 0.1 |
| 8(a)(1)(2)(4) | 102 | 0.6 |
| 8(a)(1)(2)(5) | 41 | 0.2 |
| 8(a)(1)(2)(3)(4) | ||
| 8(a)(1)(2)(3)(4)(5) | 11 | 0.1 |
| of Sec 8(a) by individual subsection | ||
| 8(a)(1) | 17,361 | 100 |
| 8(a)(2) | 716 | 4.1 |
| 8(a)(3) | 10,979 | 63.2 |
| 8(a)(4) | 465 | 2.7 |
| 8(a)(5) | 5,506 | 31.7 |
| B. Charges filed against unions under Sec. 8(b) | ||
| Subsections of Sec 8(b) — Total cases | 9,022 | 100 |
| 8(b)(1) | 3,873 | 42.9 |
| 8(b)(2) | 208 | 2.3 |
| 8(b)(3) | 394 | 4.4 |
| 8(b)(4) | 2,495 | 27.7 |
| 8(b)(5) | 5 | 0.1 |
| 8(b)(6) | 9 | 0.1 |
| 8(b)(7) | 475 | 5.3 |
| 8(b)(1)(2) | 1,301 | 14.4 |
| 8(b)(1)(3) | 174 | 1.9 |
| 8(b)(1)(7) | 7 | 0.1 |
| 8(b)(2)(3) | 11 | 0.1 |
| 8(b)(3)(7) | 2 | 0 |
| 8(b)(1)(2)(3) | 58 | 0.6 |
| 8(b)(1)(2)(5) | 5 | 0.1 |
| 8(b)(1)(2)(3)(7) | 1 | 0 |
| 8(b)(1)(2)(3)(4) | 1 | 0 |
| 8(b)(1)(2)(3)(4)(6) | 1 | 0 |
| 8(b) — 8(b)(1) Total | 5,422 | 60.1 |
| 8(b) — 8(b)(2) Total | 1,587 | 17.6 |
| 8(b) — 8(b)(3) Total | 641 | 7.1 |
| 8(b) — 8(b)(4) Total | 2,495 | 27.7 |
| 8(b) — 8(b)(5) Total | 20 | 0.2 |
| 8(b) — 8(b)(6) Total | 13 | 0.1 |
| 8(b) — 8(b)(7) Total | 475 | 5.3 |
| B1. Analysis of 8(b)(4) — Total cases 8(b)(4) | 2,495 | 100 |
| 8(b)(4)(A) | 141 | 5.7 |
| 8(b)(4)(B) | 1,640 | 65.7 |
| 8(b)(4)(C) | 26 | 1 |
| 8(b)(4)(D) | 627 | 25.1 |
| 8(b)(4)(A)(B) | 49 | 2 |
| 8(b)(4)(B)(C) | 12 | 0.5 |
| 8(b)(4) — 8(b)(4)(A) Total | 190 | 7.6 |
| 8(b)(4) — 8(b)(4)(B) Total | 1,701 | 68.2 |
| 8(b)(4) — 8(b)(4)(C) Total | 38 | 1.5 |
| 8(b)(4) — 8(b)(4)(D) Total | 627 | 25.1 |
| B2. Analysis of 8(b)(7) — Total cases 8(b)(7) | 475 | 100 |
| 8(b)(7)(A) | 127 | 26.7 |
| 8(b)(7)(B) | 31 | 6.5 |
| 8(b)(7)(C) | 304 | 64.1 |
| 8(b)(7)(A)(B) | 4 | 0.8 |
| 8(b)(7)(A)(C) | 1 | 0.2 |
| 8(b)(7)(B)(C) | 8 | 1.7 |
| 8(b)(7) — 8(b)(7)(A) Total | 132 | 27.8 |
| 8(b)(7) — 8(b)(7)(B) Total | 43 | 9.1 |
| 8(b)(7) — 8(b)(7)(C) Total | 313 | 65.9 |
| C. Charges filed under Sec. 8(e) — Total cases 8(e) | 104 | 100 |
| Against unions alone | 76 | 73.1 |
| Against employers alone | 1 | 0.9 |
| Against unions and employers | 27 | 26 |
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Source data: U.S. NLRB Annual Reports (public domain). Reconstruction by NLRB Stats Archive. Updated June 2026.