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Office of Human Resources (OHR) Phone Number

All Services » Office of Human Resources

To contact the Office of Human Resources (OHR), please call OHR's Customer Service Team at 240.777.5000, Monday - Friday from 8:00 AM - 4:00 PM or email [email protected]. Calls not related to OHR, such as Payroll, Timekeeping or Retirement plans, may contact MC311 directly at 240.777.0311
Find more information from the following link(s):
 To speak with a Customer Service Representative, please call 311 during business hours.

Last Updated: 06/15/2026 13:02:59