About Our Company

Diamond PEO’ goal is to improve your business’ performance by providing training and staffing that sets your company up for success. We offer these services throughout the United States.

Business Solutions

Running a business is not easy. With Diamond PEO, you have all of your employee needs under control, leaving you to concentrate on your company’s common management challenges.

Our company understands the laws and issues of human resources and employee benefits. We manage the risks and put the right people in the right places. We interview, screen, and verify the personnel so that you can have complete confidence in your staff. Diamond PEO takes care of all the paperwork before, during, and after we place employees, and we do it on your site.


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