Amalgamated Transit Union Local 1775 (ATU) |
Canadian Union of Postal Workers Local 503 (CUPW) |
International Brotherhood of Electrical Workers Local 353 (IBEW) |
International Federation of Professional and Technical Engineers (IFTPE) |
Ontario English Catholic Teachers' Association (OECTA) Elementary, Secondary, & Occasional |
Ontario Public Service Employees Union (OPSEU) Local 330, Local 389, Local 303, Local 346, Local 503, Local 349 |
Ontario Secondary School Teachers Federation (OSSTF-District 17-English) Ontario Secondary School Teachers Federation (FEESO-French) |
Public Service Alliance of Canada Local 52 (PSAC) |
Public Service Alliance of Canada-The Union of National Defence Employees (UNDE) |
Service Employees International Union-Healthcare (Region 3) (SEIU) |
Simcoe County Elementary Teachers Federation (SCETF) Simcoe County Elementary Occasional Teachers Federation (SCEOTF) |
United Auto Workers Local 251 (UAW) |