OHS Inc. Corporate Headquarters
You can email us: ("Hello, OHS! I have a question or comment.")
- 1.800.456.4647 (U.S. & Canada)
Or...come visit us!
OHS Health & Safety Services, Inc.
Commerce Business Center
3303 Harbor Blvd., Building G-2
Costa Mesa, California USA 92626
HQ Office Hours (Pacific Time Zone)
- Monday-Friday: 8 AM to 5 PM
(Drug test collections 8 AM to 4 PM only)
- Saturday: Closed
- Sunday: Closed
- Major Holidays: Closed