| Business | Phone |
| Amalgamated Transit Union 812 Wilson Ave, North York M3K 1E5 | (416) 398-5113 |
| American Federation-Musicians 75 The Donway W #1010, North York M3C 2E9 | (416) 391-5161 |
| United Brotherhood-Carpenters 64 Signet Dr #A, North York M9L 2Y4 | (416) 749-0675 |
| United Brotherhood-Carpenters 2300 Finch Ave W #25, North York M9M 2Y3 | (416) 744-1207 |
| International Assn-Machinists 182 Sheppard Ave W, North York M2N 1M8 | (416) 225-9003 |
| Laborers' International Union 1263 Wilson Ave #200, North York M3M 3G2 | (416) 241-1183 |
| Labourers International Union 3750 Chesswood Dr, North York M3J 2W6 | (416) 638-0506 |
| Canadian Auto Workers-Canada 205 Placer Crt, North York M2H 3H9 | (416) 497-4110 |
| Millwright Regional Council 79 Sunrise Ave, North York M4A 1A9 | (416) 757-5161 |
| Oecta Metro Occassional 951 Wilson Ave, North York M3K 2A7 | (416) 636-5644 |
| Ontario Federation Of Labour 15 Gervais Dr, North York M3C 1Y8 | (416) 441-2731 |
| Ontario Public Svc Employees 100 Lesmill Rd, North York M3B 3P8 | (416) 443-8888 |
| Painters & Allied Trades 130 Toro Rd, North York M3J 3M9 | (416) 630-9604 |
| Sunnybrook Hospital Employees 15 Gervais Dr #300, North York M3C 1Y8 | (416) 447-3339 |
| Seiu 75 The Donway W, North York M3C 2E9 | (416) 443-2689 |
| Service Employees Intl Union 75 The Donway W #810, North York M3C 2E9 | (416) 447-2311 |
| Sheet Metal Workers Union 955 Wilson Ave #14, North York M3K 2A8 | (416) 630-1160 |
| Steel Workers Union 1880 O'Connor Dr, North York M4A 1W9 | (416) 759-7881 |
| Teamsters Joint Council 7 Hafis Rd, North York M6M 2V6 | (416) 244-6415 |
| Toronto Typographic Union 15 Gervais Dr #608, North York M3C 1Y8 | (416) 444-0499 |
| Ufcw 45 Sheppard Ave E #803, North York M2N 5W9 | (416) 222-2433 |
| United Brotherhood-Carpenters 5799 Yonge St #807, North York M2M 3V3 | (416) 225-8885 |
| Unite Ontario Council 15 Gervais Dr #400, North York M3C 1Y8 | (416) 510-0887 |
| United Farmworkers Of America 15 Gervais Dr #305, North York M3C 1Y8 | (416) 444-9209 |
| United Steelworkers Of America 21 Fenmar Dr, North York M9L 2Y9 | (416) 748-9475 |
| Canadian Labour Congress 15 Gervais Dr #305, North York M3C 1Y8 | (416) 441-3710 |
| Bricklayers Union 1170 Sheppard Ave W #49, North York M3K 2A3 | (416) 631-8340 |
| Canadian Union-Postal Workers 47 Densley Ave, North York M6M 2P5 | (416) 241-9294 |
| Caw 15 Gervais Dr #600, North York M3C 1Y8 | (416) 510-1333 |
| Caw Local 30 Tangiers Rd, North York M3J 2B2 | (416) 635-5988 |
| Cawtca 415 Oakdale Rd, North York M3N 1W7 | (416) 740-2298 |
| Central Ontario Regional Cncl 2300 Finch Ave W, North York M9M 2Y3 | (416) 785-7006 |
| Communications Energy-Prwrkrs 1262 Don Mills Rd, North York M3B 2W7 | (416) 447-5255 |
| Construction Trades Council 15 Gervais Dr #801, North York M3C 1Y8 | (416) 449-5115 |
| Cupe 15 Gervais Dr, North York M3C 1Y8 | (416) 449-4999 |
| Cupe 1262 Don Mills Rd, North York M3B 2W7 | (416) 447-5943 |
| Cupe 40 Playfair Ave, North York M6B 2P9 | (416) 787-4241 |
| Cupe 209 Sheppard Ave E, North York M2N 3A8 | (416) 512-9493 |
| District 30 Osstf Provincial 35 Mobile Dr, North York M4A 2P6 | (416) 757-6667 |