| Business | Phone |
| Graphic Communications Intl 26 Knightwood Dr, St Catharines L2M 2N8 | (905) 934-3666 |
| Canadian Union-Public Emplys 110 Hanover Dr #103, St Catharines L2W 1A4 | (905) 641-3051 |
| Boiler Makers Union Local 680 340 Lakeshore Rd W, St Catharines L2R 7K6 | (905) 935-6234 |
| Canadian Auto Workers 318 Ontario St, St Catharines L2R 5L8 | (905) 687-1841 |
| Canadian Merchant Svc Guild 36 Wright St, St Catharines L2P 3J4 | (905) 685-4224 |
| Canadian Union Of Postal 11 Emmett Rd, St Catharines L2R 7K6 | (905) 984-6400 |
| Canadian Union-Public Emplys 300 Welland Ave #7, St Catharines L2R 7L9 | (905) 641-5034 |
| Caw Ctr 124 Bunting Rd, St Catharines L2P 3G5 | (905) 682-2611 |
| Cupe 15 Neilson St #E, St Catharines L2M 5V9 | (905) 685-0001 |