A Professional Employment Organization You Can Trust

Every PEO is different, and you deserve the best when it comes to hiring a professional employment organization. At Diamond PEO, we handle everything from employee benefits to workers’ compensation, and we will give you the personalized care and attention that you deserve.

Find the Perfect Payroll Solution for Your Business

Call (714) 796-9110


Thank you for your interest. For questions or comments, use the information below. We look forward to hearing from you soon.

Oregon Address
650 NE Holladay Street, Suite 1600
Portland, OR 97232


Corporate Office
27442 Calle Arroyo
Cottage 45
San Juan Capistrano, CA 92675

Service Area
Nationwide Services, including Hawaii & Alaska

(714) 796-9110

Hours of Operation
Monday – Friday: 8:00 a.m. – 5:00 p.m.

Customer Contact Hours
For 24/7 After-Hours Support,
Call (949) 724-4504