| Business | Phone |
| Afl-Cio International Laundry 3204 Churchill Dr, Madison 53713 | (608) 274-4755 |
| Afscme 121 S Hancock St, Madison 53703 | (608) 255-9435 |
| Afscme 2433 University Ave F, Madison 53726 | (608) 232-9393 |
| Afscme 4513 Vernon Blvd, Madison 53705 | (608) 233-1942 |
| Wisconsin Council No 40 8033 Excelsior Dr B, Madison 53717 | (608) 836-4040 |
| Aft Wisconsin 6602 Normandy Ln, Madison 53719 | (608) 277-7700 |
| American Federation Government 2500 Overlook Ter, Madison 53705 | (608) 256-0424 |
| American Federation-Teachers Madison 53719 | (608) 274-8838 |
| Bricklayers & Allied Craftsmen 1602 S Park St 202, Madison 53715 | (608) 259-1151 |
| Iron Workers 1602 S Park St 210, Madison 53715 | (608) 256-3162 |
| Wi Professional Police Assn 340 Coyier Ln, Madison 53713 | (608) 273-3840 |
| Wisconsin Alliance-Fair Contr 2801 Coho St 202, Madison 53713 | (608) 274-1915 |
| Wisconsin Education Assn Cncl 33 Nob Hill Rd, Madison 53713 | (608) 276-7711 |
| Wisconsin State Council-Crpntr 115 W Main St, Madison 53703 | (608) 256-1206 |
| Wseu 3530 Memorial Dr, Madison 53704 | (608) 244-4640 |
| Building & Construction Trades 1602 S Park St 204, Madison 53715 | (608) 256-3161 |
| Carpenters 1602 S Park St 220, Madison 53715 | (608) 257-4220 |
| Communications Workers-America 821 Williamson St, Madison 53703 | (608) 256-4630 |
| University Of Wis Clerical 1602 S Park St 108, Madison 53715 | (608) 257-2803 |
| Teamsters 1314 N Stoughton Rd, Madison 53714 | (608) 244-6207 |
| United Food & Commercial Wrkrs 2228 Myrtle St, Madison 53704 | (608) 244-5653 |
| United Food & Commercial Wrkrs 6414 Copps Ave 213, Madison 53716 | (608) 221-1401 |
| United Transportation Union 7 N Pinckney St 50c, Madison 53703 | (608) 251-4120 |
| State Engineering Assn 4510 Regent St B, Madison 53705 | (608) 233-4696 |
| Steamfitters 1214 Ann St, Madison 53713 | (608) 256-6868 |
| Seiu 148 E Wilson St, Madison 53703 | (608) 255-5211 |
| Seiu District 2001 W Beltline Hwy 201, Madison 53713 | (608) 277-1199 |
| Seiu Local 1 1421 S Park St, Madison 53715 | (608) 257-0065 |
| Sheet Metal Workers Local 77 W Beltline Hwy, Madison 53713 | (608) 274-3354 |
| South Central Federation-Labor 1602 S Park St 228, Madison 53715 | (608) 256-5111 |
| Firefighters 821 Williamson St, Madison 53703 | (608) 257-2030 |
| Firefighters Professional-Wis 7 N Pinckney St 135, Madison 53703 | (608) 251-5832 |
| Plumber 6200 Gisholt Dr, Madison 53713 | (608) 222-1650 |
| International Union-Oper Engrs 4702 S Biltmore Ln, Madison 53718 | (608) 243-0139 |
| International Union-Operating 4702 Sbiltmore Ln, Madison 53704 | (608) 243-0139 |
| Intl Brotherhood Of Electrical 1602 S Park St, Madison 53715 | (608) 259-2400 |
| Northern Wisconsin Regional 5202 Monument Ln, Madison 53704 | (608) 257-2448 |
| Office & Pro Employees Union 1602 S Park St 226, Madison 53715 | (608) 257-4734 |
| Operative Plasterers & Cement 2025 Atwood Ave, Madison 53704 | (608) 221-0599 |
| Patient First 2001 W Beltline Hwy, Madison 53713 | (608) 278-1199 |
| Letter Carriers National Assn 2984 Triverton Pike Dr, Madison 53711 | (608) 274-2325 |
| Liuna-City Employees Local 2021 Atwood Ave, Madison 53704 | (608) 244-9195 |
| National Air Traffic Control 4301 International Ln, Madison 53704 | (608) 243-1182 |
| Madison Area Musicians Assn 6414 Copps Ave, Madison 53716 | (608) 222-3030 |
| Madison Teachers Inc 821 Williamson St, Madison 53703 | (608) 257-0491 |
| Wis Professional Police Assn 340 Coyier Ln, Madison 53713 | (414) 257-4000 |