| Business | Phone |
| Actra 2 Daly Ave #170, Ottawa K1N 6E2 | (613) 565-2168 |
| Alliance De La Fonction 233 Gilmour St, Ottawa K2P 0P2 | (613) 560-4200 |
| Alliance Employees Union 280 Metcalfe St, Ottawa K2P 1R7 | (613) 237-1147 |
| Amalgamated Transit Union 2212 Gladwin Cres #C9, Ottawa K1B 5N1 | (613) 738-3177 |
| Public Service Alliance-Canada 275 Slater St, Ottawa K1P 5H9 | (613) 231-4151 |
| Association Des Employe En 220 Laurier Ave W #700, Ottawa K1P 5Z9 | (613) 236-9181 |
| Association Internationale Des 350 Sparks St #403, Ottawa K1R 7S8 | (613) 567-8988 |
| Canadian Union-Public Employee 280 Metcalfe St #11, Ottawa K2P 1R7 | (613) 233-0228 |
| Graphic Communications Intl 2841 Riverside Dr, Ottawa K1V 8N4 | (613) 523-6730 |
| Hospitality & Svc Trades 200 Cooper St #2, Ottawa K2P 0G1 | (613) 238-8136 |
| International Brotherhood 1091 Wellington St, Ottawa K1Y 2Y4 | (613) 725-3608 |
| International Union-Bricklayer 141 Laurier Ave W #A, Ottawa K1P 5J3 | (613) 233-8614 |
| Intrntl Brotherhood-Painters 880 Lady Ellen Pl #104, Ottawa K1Z 5L9 | (613) 722-6293 |
| Cupe Local 5500 280 Metcalfe St, Ottawa K2P 1R7 | (613) 565-3118 |
| Labour Community Svc 280 Metcalfe St #500, Ottawa K2P 1R7 | (613) 233-9180 |
| Labourers' Intl Union Of North 1145 Hunt Club Rd #420, Ottawa K1V 0Y3 | (613) 738-3184 |
| Labourers' International Union 1194 Evans Ave, Ottawa K1H 7Z8 | (613) 521-6565 |
| Cupe Ottawa-Carleton Dist 280 Metcalfe St, Ottawa K2P 1R7 | (613) 594-5286 |
| Liuna Loc 527 Members Fund 1194 Evans Ave, Ottawa K1H 7Z8 | (613) 521-6314 |
| Musicians Assn Of Ottawa-Hull 485 Bank St #204, Ottawa K2P 1Z2 | (613) 235-3253 |
| National Health & Welfare 233 Gilmour St #1202, Ottawa K2P 0P2 | (613) 237-2732 |
| Office & Professional Employee 2841 Riverside Dr #300, Ottawa K1V 8N4 | (613) 733-3888 |
| Ontario Nurses Assn # 83 1800 Bank St #210, Ottawa K1V 0W3 | (613) 731-1314 |
| Ontario Public Svc Employees 2525 St Laurent Blvd, Ottawa K1H 8P5 | (613) 739-9100 |
| Ontario Taxi Union Local 1688 700 Industrial Ave, Ottawa K1G 0Y9 | (613) 739-0900 |
| Ottawa Firefighter's Assn 2378 Holly Lane #201, Ottawa K1V 7P1 | (613) 526-1454 |
| Ottawa Carleton Public Emplys 52 Concord St N, Ottawa K1S 0Y6 | (613) 230-2456 |
| Ottawa District Labour Council 280 Metcalfe St #500, Ottawa K2P 1R7 | (613) 233-7820 |
| Ottawa Newspaper Guild 1050 Baxter Rd #7b, Ottawa K2C 3P1 | (613) 820-6545 |
| Ottawa-Carleton Elem Teachers 1140 Morrison Dr #216, Ottawa K2H 8S9 | (613) 596-3932 |
| Service Commercial Employees 88 Main St, Ottawa K1S 1C2 | (613) 234-6568 |
| Sheet Metal Workers Intl Assn 267 Richmond Rd, Ottawa K1Z 6X3 | (613) 724-6116 |
| Steelworkers Dental Office 2285 St Laurent Blvd #D9, Ottawa K1G 4Z7 | (613) 731-2111 |
| Syndicat Canadien Des Comms 350 Albert St #1900, Ottawa K1R 1A4 | (613) 230-5200 |
| Syndicat International Comm 2285d St Laurent Blvd #11, Ottawa K1G 4Z7 | (613) 731-6315 |
| Teamsters Local Union 91 1300 Ages Dr, Ottawa K1G 5T4 | (613) 247-9191 |
| Tng Canada 1050 Baxter Rd #7b, Ottawa K2C 3P1 | (613) 820-9777 |
| Union Of Solicitor Gen 233 Gilmour St #603, Ottawa K2P 0P2 | (613) 232-4821 |
| Union Des Employes-Defense 116 Albert St, Ottawa K1P 5G3 | (613) 594-4505 |
| Union Canadienne Des Employes 233 Gilmour St #702, Ottawa K2P 0P2 | (613) 238-4003 |
| Union Of Taxation Employees 1729 Bank St, Ottawa K1V 7Z5 | (613) 736-0411 |
| United Association Plumbers 225 Metcalfe St, Ottawa K2P 1P9 | (613) 565-1100 |
| Union Of Canadian Transport 252 Arlington Ave, Ottawa K1R 5T2 | (613) 563-0197 |
| Union Typographique D'Ottawa 2841 Riverside Dr, Ottawa K1V 8N4 | (613) 523-6629 |
| United Assn Of Plumbers & Ftrs 904 Lady Ellen Pl, Ottawa K1Z 5L5 | (613) 728-5583 |
| United Food & Commercial Wrkrs 20 Hamilton Ave N, Ottawa K1Y 1B6 | (613) 725-2154 |
| United Steelworkers Of America 2285d St Laurent Blvd #12, Ottawa K1G 4Z7 | (613) 260-7205 |
| Carpenters Union 315 St Laurent Blvd, Ottawa K1K 2Z5 | (613) 745-1513 |
| Building & Construction Trades 350 Sparks St #910, Ottawa K1R 7S8 | (613) 236-0653 |
| Bricklayers Canadian Office 141 Laurier Ave W #A, Ottawa K1P 5J3 | (613) 233-7920 |
| Bricklayers Masons Tile 2100 Thurston Dr #3, Ottawa K1G 4K8 | (613) 739-5944 |
| Brotherhood Of Maintenance 2775 Lancaster Rd #1, Ottawa K1B 4V8 | (613) 731-7356 |
| Canadian Union Of Postal Wrkrs 280 Metcalfe St #303, Ottawa K2P 1R7 | (613) 565-9292 |
| Canadian Health Coalition 2841 Riverside Dr, Ottawa K1V 8N4 | (613) 521-3400 |
| Canadian Federation Of Nurses 2841 Riverside Dr #200, Ottawa K1V 8N4 | (613) 526-4661 |
| Canadian Merchant Svc Guild 1150 Morrison Dr, Ottawa K2H 8S9 | (613) 829-9531 |
| Canadian Union-Public Employee 21 Florence St, Ottawa K2P 0W6 | (613) 237-1590 |
| Canadian Union Of Public 1657 Carling Ave, Ottawa K2A 1C4 | (613) 722-0652 |
| Canadian Union-Postal Workers 2285 St Laurent Blvd #B6, Ottawa K1G 4Z5 | (613) 739-8051 |
| Caw & Tca 1 Rideau St, Ottawa K1N 8S7 | (613) 241-6562 |
| Civic Institute-Pro Personnel 1 Nicholas St #1108, Ottawa K1N 7B7 | (613) 241-3730 |