NLRB Stats Archive › Annual Reports › FY2006 › Size of units in representation elections (RC, RM)
| Total RC and RMelections........ | 121,064 | 1,774 | 100 | 500 | 100 | 490 | 100 | 76 | 100 | 708 | 100 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Under 10............................................................ | 2,695 | 439 | 24.7 | 24.7 | 198 | 39.6 | 106 | 21.6 | 18 | 23.7 | 117 | 16.5 |
| 10 to 19.............................................................. | 4,622 | 325 | 18.3 | 43.1 | 101 | 20.2 | 92 | 18.8 | 12 | 15.8 | 120 | 16.9 |
| 20 to 29.............................................................. | 5,798 | 223 | 12.6 | 55.6 | 54 | 10.8 | 68 | 13.9 | 7 | 9.2 | 94 | 13.3 |
| 30 to 39.............................................................. | 5,576 | 156 | 8.8 | 64.4 | 34 | 6.8 | 46 | 9.4 | 5 | 6.6 | 71 | 10 |
| 40 to 49.............................................................. | 4,983 | 108 | 6.1 | 70.5 | 15 | 3 | 28 | 5.7 | 10 | 13.2 | 55 | 7.8 |
| 50 to 59.............................................................. | 4,721 | 81 | 4.6 | 75.1 | 17 | 3.4 | 22 | 4.5 | 4 | 5.3 | 38 | 5.4 |
| 60 to 69.............................................................. | 3,955 | 60 | 3.4 | 78.5 | 14 | 2.8 | 18 | 3.7 | 3 | 3.9 | 25 | 3.5 |
| 70 to 79.............................................................. | 3,427 | 41 | 2.3 | 80.8 | 4 | 0.8 | 12 | 2.4 | 2 | 2.6 | 23 | 3.2 |
| 80 to 89.............................................................. | 3,635 | 44 | 2.5 | 83.3 | 5 | 1 | 13 | 2.7 | 1 | 1.3 | 25 | 3.5 |
| 90 to 99.............................................................. | 3,590 | 36 | 2 | 85.3 | 5 | 1 | 10 | 2 | 3 | 3.9 | 18 | 2.5 |
| 100 to 109.......................................................... | 4,145 | 40 | 2.3 | 87.5 | 9 | 1.8 | 11 | 2.2 | 2 | 2.6 | 18 | 2.5 |
| 110 to 119.......................................................... | 2,662 | 23 | 1.3 | 88.8 | 5 | 1 | 7 | 1.4 | 0 | 0 | 11 | 1.6 |
| 120 to 129.......................................................... | 2,417 | 19 | 1.1 | 89.9 | 4 | 0.8 | 4 | 0.8 | 0 | 0 | 11 | 1.6 |
| 130 to 139.......................................................... | 1,634 | 11 | 0.6 | 90.5 | 3 | 0.6 | 2 | 0.4 | 0 | 0 | 6 | 0.8 |
| 140 to 149.......................................................... | 1,971 | 14 | 0.8 | 91.3 | 3 | 0.6 | 6 | 1.2 | 0 | 0 | 5 | 0.7 |
| 150 to 159.......................................................... | 1,651 | 10 | 0.6 | 91.9 | 3 | 0.6 | 3 | 0.6 | 0 | 0 | 4 | 0.6 |
| 160 to 169.......................................................... | 1,317 | 8 | 0.5 | 92.3 | 2 | 0.4 | 1 | 0.2 | 1 | 1.3 | 4 | 0.6 |
| 170 to 179.......................................................... | 1,493 | 8 | 0.5 | 92.8 | 2 | 0.4 | 2 | 0.4 | 1 | 1.3 | 3 | 0.4 |
| 180 to 189.......................................................... | 1,255 | 7 | 0.4 | 93.2 | 0 | 0 | 2 | 0.4 | 0 | 0 | 5 | 0.7 |
| 190 to 199.......................................................... | 1,055 | 6 | 0.3 | 93.5 | 2 | 0.4 | 3 | 0.6 | 0 | 0 | 1 | 0.1 |
| 200 to 299.......................................................... | 10,757 | 47 | 2.6 | 96.2 | 10 | 2 | 13 | 2.7 | 1 | 1.3 | 23 | 3.2 |
| 300 to 399.......................................................... | 7,193 | 20 | 1.1 | 97.3 | 2 | 0.4 | 7 | 1.4 | 0 | 0 | 11 | 1.6 |
| 400 to 499.......................................................... | 7,415 | 18 | 1 | 98.3 | 4 | 0.8 | 5 | 1 | 2 | 2.6 | 7 | 1 |
| 599.......................................................... | 3,482 | 6 | 0.4 | 1 | 0.2 | 1 | 0.1 | |||||
| 500 to | 0.3 | 98.6 | 2 | 2 | 2.6 | |||||||
| 600 to 799.......................................................... 999.......................................................... | 5,994 | 9 | 0.5 | 99.2 | 0 | 0 | 2 | 0.4 | 1 | 1.3 | 6 | 0.8 |
| 800 to | 2,580 | 4 | 0.2 | 99.4 | 0 | 0 | 2 | 0.4 | 0 | 0 | 2 | 0.3 |
Source data: U.S. NLRB Annual Reports (public domain). Reconstruction by NLRB Stats Archive. Updated June 2026.