| Business | Phone |
| American Postal Workers Union 2116 N Main St # A, Walnut Creek 94596 | (925) 932-4200 |
| Exemplar Benefit Adminsitrator 36 Estella Ct, Walnut Creek 94597 | (925) 939-8889 |
| Ibew 3063 Citrus Cir, Walnut Creek 94598 | (707) 452-2700 |
| Ufcw Walnut Creek 94596 | (925) 746-7530 |