CUPE Local 543 Bargaining Units (click on links to visit employer websites)
| Sublocal | Employer |
| 543.1 | City of Windsor Inside Workers |
| 543.3 | Windsor-Essex County Health Unit |
| 543.4 | ABC Day Nursery |
| 543.5 | |
| 543.6 | Windsor Essex Community Housing Corporation |
| 543.7 | Synagro |
| 543.8 | Great Beginnings Child Centred Cooperative Inc. |
| 543.12 | Seasons Retirement Community – Amherstburg |