| Business | Phone |
| National Assn-Letter Carriers 210 Queen Anne Ave N 201, Seattle 98109 | (206) 284-3420 |
| Seiu 2900 Eastlake Ave E 230, Seattle 98102 | (206) 322-3010 |
| Communications Workers-America 2800 1st Ave, Seattle 98121 | (206) 728-6999 |
| Afl-Cio 2800 1st Ave 220, Seattle 98121 | (206) 448-4888 |
| International Longshoremen's 2800 1st Ave 201, Seattle 98121 | (206) 448-3489 |
| Intl Brotherhood-Boilermakers 2800 1st Ave, Seattle 98121 | (206) 623-6473 |
| Iupat District Council 2800 1st Ave 324, Seattle 98121 | (206) 441-5554 |
| Laborers Nw Organizing Fund 600 Stewart St 1305, Seattle 98101 | (206) 256-1591 |
| Northwest Cooperation Fund 600 Stewart St, Seattle 98101 | (206) 728-1282 |
| International Federation-Pro 2900 Eastlake Ave E 300, Seattle 98102 | (206) 328-7321 |
| Newspaper Guild/Cwa 2900 Eastlake Ave E 220, Seattle 98102 | (206) 328-1190 |
| Seiu Local 925 2366 Eastlake Ave E, Seattle 98102 | (206) 568-7113 |
| Washington Alliance-Technology 2900 Eastlake Ave E 200, Seattle 98102 | (206) 726-8580 |
| Screen Actors Guild 4000 Aurora Ave N 102, Seattle 98103 | (206) 270-0493 |
| Northwest Labor & Employment 409 Maynard Ave S P400, Seattle 98104 | (206) 860-1400 |
| Marine Firemen's Union 2414 Sw Andover St F105, Seattle 98106 | (206) 467-7488 |
| King County Police Officers 5701 6th Ave S 491b, Seattle 98108 | (206) 957-0934 |
| Machinists District Lodge 9135 15th Pl S, Seattle 98108 | (206) 762-7990 |
| Marine Engineers Bnfcl Assn 732 S Homer St, Seattle 98108 | (206) 762-0803 |
| Seattle-King County Building 6770 E Marginal Way S, Seattle 98108 | (206) 441-0550 |
| Security Police Fire Pro 1109 S Bailey St, Seattle 98108 | (206) 767-4202 |
| Trades Mentor Network 6770 E Marginal Way S 125, Seattle 98108 | (206) 621-0878 |
| Ufcw 1010 S Bailey St, Seattle 98108 | (206) 763-1105 |
| Joint Council Of Teamsters 553 John St, Seattle 98109 | (206) 441-7470 |
| Public Safety Employees Local 150 Denny Way, Seattle 98109 | (206) 448-1050 |
| Local 117 553 John St, Seattle 98109 | (206) 441-4850 |
| National Maritime Union-Amer 133 Queen Anne Ave N, Seattle 98109 | (206) 282-8995 |
| National Writers Union Po Box 19743, Seattle 98109 | (206) 282-9744 |
| Seiu Washington State Council 152 Denny Way, Seattle 98109 | (206) 441-0202 |
| Truck Drivers Union 174 553 John St, Seattle 98109 | (206) 441-4861 |
| Washington Federation Of State 444 Ne Ravenna Blvd 108, Seattle 98115 | (206) 525-5363 |
| Political Staff Workers Union 5018 Rainier Ave S, Seattle 98118 | (206) 722-2506 |
| National Office 1711 W Nickerson St, Seattle 98119 | (206) 284-6001 |
| Seattle Fire Fighters Union 517 2nd Ave W, Seattle 98119 | (206) 285-1271 |
| Afl-Cio Western Region 2800 1st Ave, Seattle 98121 | (206) 374-0170 |
| Iatse Local 2800 1st Ave 229, Seattle 98121 | (206) 443-9354 |
| Iatse Theatrical Stage 2800 1st Ave 231, Seattle 98121 | (206) 441-1515 |
| Ibpat Local Union 2800 1st Ave 77, Seattle 98121 | (206) 441-6922 |
| King County Labor Council-Wa 2800 1st Ave 206, Seattle 98121 | (206) 441-8510 |
| King County Lavor Agency 2800 1st Ave 126, Seattle 98121 | (206) 448-9277 |
| Laborers & Hod Carriers 2800 1st Ave 50, Seattle 98121 | (206) 441-0481 |
| Laborers Local 2800 1st Ave 301, Seattle 98121 | (206) 443-1239 |
| Lads Local Union 2800 1st Ave, Seattle 98121 | (206) 441-3505 |
| Musicians Union Of Seattle 2620 3rd Ave, Seattle 98121 | (206) 441-7600 |
| Office & Professional Employee 2800 1st Ave 304, Seattle 98121 | (206) 441-8880 |
| Operating Engineers 2800 1st Ave, Seattle 98121 | (206) 441-8544 |
| Operating Engineers Local Western & Clayamp;, Seattle 98121 | (206) 448-6180 |
| Plasterers' Union 2800 1st Ave 244, Seattle 98121 | (206) 441-3477 |
| Rebound Seattle Building 2700 1st Ave 103, Seattle 98121 | (206) 441-7364 |
| Roofers & Waterproofers Local 2800 1st Ave 105, Seattle 98121 | (206) 728-7654 |
| Roofers Apprenticeship 2800 1st Ave 320, Seattle 98121 | (206) 728-2777 |
| Shipwrights Joiners & Caulkers 2415 Western Ave, Seattle 98121 | (206) 441-8266 |
| Shipyard Laborers 2800 1st Ave 114, Seattle 98121 | (206) 448-0836 |
| Sign Painters Paint Makers 2800 1st Ave 310, Seattle 98121 | (206) 443-1094 |
| Sprinkler Fitters & Apprentice 2800 1st Ave 111, Seattle 98121 | (206) 441-0737 |
| Washington State Jobs W/Justce 2620 3rd Ave, Seattle 98121 | (206) 441-4969 |
| Laborers Street Local 440 565 13th Ave, Seattle 98122 | (206) 329-5911 |
| Washington Public Employee 18820 Aurora Ave N, Seattle 98133 | (206) 542-2690 |
| Sailors Union Of The Pacific 1253 6th Ave S, Seattle 98134 | (206) 467-7944 |
| Service Employee Intl Union 151 S Lander St A, Seattle 98134 | (206) 838-3200 |
| Seatac Airport Firefighters 2400 S 170th St, Seattle 98158 | (206) 439-1185 |
| Aft Washington 14900 Interurban Ave S 130, Seattle 98168 | (206) 242-4777 |
| King County Corrections Guild 6417 S 143rd Pl, Seattle 98168 | (206) 444-9493 |
| Laborers International Union 12201 Tukwila International Bl, Seattle 98168 | (206) 223-3402 |
| Luna-Nw Regional Office 12201 Tukwila Intl Blvd 140, Seattle 98168 | (206) 441-6507 |
| Northwest Fair Contracting 14675 Interurban Ave S, Seattle 98168 | (206) 770-0452 |
| Pacific Nw Iron Workers Fdrl 4550 S 134th Pl 101, Seattle 98168 | (206) 244-2993 |
| Public Professional & Office 14675 Interurban Ave S 305, Seattle 98168 | (206) 441-0763 |
| Teamsters International Unions 14675 Interurban Ave S 307, Seattle 98168 | (206) 441-4860 |
| Teamsters Local Union 14675 Interurban Ave S 303, Seattle 98168 | (206) 441-6060 |
| National Postal Mail Handlers 19530 International Blvd 201, Seattle 98188 | (206) 870-1166 |
| Seattle Professional Engrng 15205 52nd Ave S, Seattle 98188 | (425) 743-4752 |
| Speea 15205 52nd Ave S, Seattle 98188 | (206) 433-0991 |
| Washington State Nurses Assoc 575 Andover Park W 101, Seattle 98188 | (206) 575-7979 |