NLRB Stats Archive › Annual Reports › FY1948 › Industrial distribution of unfair labor practice and representation cases received
Industrial distribution of unfair labor practice and representation cases received
| Industrial Group | All cases | Unfair labor practice cases | Unfair labor practice cases | Unfair labor practice cases | Unfair labor practice cases | Unfair labor practice cases | Representation cases | Representation cases | Representation cases | Representation cases |
|---|---|---|---|---|---|---|---|---|---|---|
| NLRA C | CA | CB | CC | CD | NLRA R | RC | RM | RD | ||
| Total | 10,635 | 296 | 2,553 | 438 | 243 | 68 | 643 | 5,478 | 459 | 458 |
| Manufacturing | 6,996 | 224 | 1,725 | 309 | 87 | 14 | 463 | 3,674 | 288 | 312 |
| Manufacturing — Food and kindred products | 1,072 | 33 | 304 | 37 | 27 | 5 | 60 | 491 | 61 | 54 |
| Manufacturing — Textile-mill products | 418 | 11 | 152 | 13 | 4 | 0 | 36 | 191 | 9 | 2 |
| Manufacturing — Apparel and other finished products | 325 | 9 | 126 | 38 | 18 | 0 | 14 | 84 | 22 | 14 |
| Manufacturing — Lumber and wood products | 443 | 12 | 91 | 11 | 7 | 2 | 46 | 240 | 22 | 12 |
| Manufacturing — Primary metal industries | 357 | 7 | 110 | 8 | 5 | 0 | 16 | 184 | 14 | 26 |
| Manufacturing — Fabricated metal products (except machinery and transportation equipment) | 537 | 27 | 97 | 11 | 1 | 0 | 40 | 319 | 22 | 20 |
| Manufacturing — Machinery (except electrical) | 868 | 35 | 209 | 9 | 5 | 1 | 51 | 488 | 35 | 30 |
| Manufacturing — Transportation equipment | 500 | 26 | 145 | 8 | 1 | 1 | 31 | 253 | 10 | 24 |
| Mining | 213 | 7 | 28 | 16 | 6 | 0 | 28 | 104 | 12 | 12 |
| Construction | 341 | 4 | 50 | 47 | 45 | 28 | 3 | 151 | 11 | 2 |
| Wholesale trade | 627 | 12 | 138 | 11 | 9 | 1 | 25 | 333 | 49 | 49 |
| Retail trade | 633 | 7 | 111 | 12 | 7 | 0 | 28 | 343 | 49 | 21 |
| Finance, insurance, and real estate | 174 | 0 | 79 | 4 | 4 | 0 | 0 | 78 | 2 | 8 |
| Transportation, communication, and other public utilities | 1,133 | 21 | 287 | 65 | 40 | 8 | 75 | 549 | 31 | 54 |
| Services | 473 | 15 | 131 | 27 | 22 | 6 | 14 | 215 | 19 | 24 |
| Agriculture, forestry, and fisheries | 19 | 0 | 1 | 0 | 0 | 0 | 1 | 8 | 5 | 0 |
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Source data: U.S. NLRB Annual Reports (public domain). Reconstruction by NLRB Stats Archive. Updated June 2026.