| Business | Phone |
| Cement Masons Union Local 1605 N Susan St, Santa Ana 92703 | (714) 554-0730 |
| Laborers Local 1532 E Chestnut Ave, Santa Ana 92701 | (714) 542-7203 |
| National Assn-Letter Carriers 702 S Broadway, Santa Ana 92701 | (714) 836-4907 |
| Santa Ana City Employees Assn 1651 E 4th St # 120, Santa Ana 92701 | (714) 543-1063 |
| Seiu Local 1633 E 4th St # 144, Santa Ana 92701 | (714) 954-0280 |
| Service Employees Intl Union 1516 N Sycamore St, Santa Ana 92701 | (714) 245-9700 |