| Business | Phone |
| International Union Oper Engrs 200 Dundas St E #301, Belleville K8N 1E3 | (613) 968-3363 |
| Ontario Public Svc Employees Wallbridge-Loyalist Rd, Belleville K8N 5B9 | (613) 969-8989 |
| Opseu 610 Dundas St E, Belleville K8N 1G7 | (613) 969-2220 |
| Service Employees Union 259 Albert St, Belleville K8N 3N8 | (613) 962-8442 |