| Business | Phone |
| American Postal Workers Union 2651 Pacific Park Dr, Whittier 90601 | (562) 908-7461 |
| Los Angeles County Crpntry Jnt 10015 Rose Hills Rd # 200, Whittier 90601 | (562) 463-3433 |
| So Calif Lathing Ind Jatc 10009 Rose Hills Rd, Whittier 90601 | (562) 699-5820 |
| Sprinkler Fitters Ua Local 12140 Rivera Rd, Whittier 90606 | (562) 698-9909 |
| Resilient Floor & Decorative 8051 Pioneer Blvd, Whittier 90606 | (562) 695-7402 |
| Ibew 7238 Painter Ave, Whittier 90602 | (562) 907-2536 |
| Utility Workers Union 7200 Greenleaf Ave, Whittier 90602 | (562) 696-0142 |