| Business | Phone |
| Afge 210 Rock Island Arsenal 151, Rock Island 61201 | (309) 794-9102 |
| Afge 435 Bldg 350, Rock Island 61299 | (309) 794-1956 |
| Amalgamated Transit Union 311 1/2 21st St, Rock Island 61201 | (309) 786-3270 |
| Uaw 4511 4th Ave, Rock Island 61201 | (309) 788-1971 |
| Tri-Cities Building Trades 4600 Blackhawk Rd, Rock Island 61201 | (309) 786-1115 |
| Tri-City Cement Masons 7909 42nd St W, Rock Island 61201 | (309) 787-8280 |
| Bridge Structural & Ornamental 8000 29th St W, Rock Island 61201 | (309) 756-6614 |
| Steel Workers 311 1/2 21st St, Rock Island 61201 | (309) 793-1533 |
| Carpenters Local Union 3416 Blackhawk Rd # 201, Rock Island 61201 | (309) 788-6414 |
| Sheet Metal Workers 8124 42nd St W, Rock Island 61201 | (309) 787-0695 |
| Roofers Local 2827 7th Ave 10, Rock Island 61201 | (309) 786-2117 |
| Glazier's Local Union 520 12th St, Rock Island 61201 | (309) 788-8080 |
| International Union-Oper Engrs 3511 78th Ave W, Rock Island 61201 | (309) 787-4646 |
| Laborers Local 2835 7th Ave, Rock Island 61201 | (309) 786-5479 |
| Labors' Local 309 Ffc Trust 420 34th Ave, Rock Island 61201 | (309) 794-1820 |
| Quad City Area Labor Mgmt Bldg 56, Rock Island 61299 | (309) 794-9194 |
| Quad-City Federation Of Labor 311 1/2 21st St, Rock Island 61201 | (309) 788-1303 |
| Plumbers & Pipe Fitters 4600 46th Ave, Rock Island 61201 | (309) 788-4569 |
| Painters Health & Safety Train 520 12th St, Rock Island 61201 | (309) 786-8920 |
| Painters Joint Apprenticeship 520 12th, Rock Island 61201 | (309) 788-8081 |
| Painters Local Union 502 520 12th St, Rock Island 61201 | (309) 788-3403 |
| Northern Illinois & Iowa Lbrs 2837 7th Ave, Rock Island 61201 | (309) 786-3361 |