| Business | Phone |
| Ontario Public Svc Employees 2285 Hwy 20, Fonthill L0S 1E6 | (905) 892-5729 |
| Ontario Secondary School Tchrs 1877 Merrittville Hwy, Fonthill L0S 1E6 | (905) 892-6524 |
| United Steelworkers Of America 2601 Hwy 20 #7, Fonthill L0S 1E6 | (905) 892-9081 |
| Canadian Union-Public Emplys 2601 Hwy 20 #3, Fonthill L0S 1E6 | (905) 892-1997 |