| Business | Phone |
| Labourers International Union 560 Dodge St, Cobourg K9A 4K5 | (905) 372-1183 |
| Northumberland Labour Council Po Box 956 Stn Main, Cobourg K9A 4W4 | (905) 372-8476 |
| Service Employees Intl Union 450 Campbell St, Cobourg K9A 4C4 | (905) 377-8460 |
| United Food & Coml Workers 1011 Elgin St W, Cobourg K9A 5J4 | (905) 372-8517 |
| Cupe 2225 210 Willmott, Cobourg | (905) 377-1432 |