| Business | Phone |
| Butte Glenn Central Labor 1009 Sycamore St, Chico 95928 | (530) 343-9474 |
| California State Employees Chico 95928 | (530) 342-7721 |
| Carpenters Union 818 Wall St, Chico 95928 | (530) 343-5262 |
| Communications Workers-America 1009 Sycamore St, Chico 95928 | (530) 891-4543 |
| Ibew 818 Wall St, Chico 95928 | (530) 342-3877 |
| International Ladies Garment 1009 Sycamore St, Chico 95928 | (530) 893-1239 |
| Plasterers & Cement Masons 818 Wall St, Chico 95928 | (530) 342-7872 |
| United Domestic Workers 1009 Sycamore St, Chico 95928 | (530) 342-7968 |
| United Food & Commercial Wrkrs 20 Constitution Dr, Chico 95973 | (530) 895-0017 |