Whether the respiratory protection medical evaluation may consider factors beyond respirator use

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

August 1, 2025

Robert K. McLellan, MD, MPH, FACOEM
Professor, Active Emeritus
Geisel School of Medicine
The Dartmouth Institute of Health Policy and Clinical Practice
74 College St
Vail Building, Room 715
Hanover, NH 03755

Philip Harber, MD, MPH, FACOEM
Adjunct Professor of Public Health
University of Arizona
Professor, Emeritus
University of California, Los Angeles

Dear Drs. McLellan and Harber:

Use of skin diving hood under respirator for bearded employee unacceptable.

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

February 25, 1982

Mr. Richard A. Uhlar
Industrial Hygienist
International Chemical Workers Union
1655 West Market Street
Akron, Ohio 44313

Dear Mr. Uhlar:

This is in response to your letter of October 1, 1981, regarding previous correspondence on the possible use of a rubber skindiving hood under a respirator to provide an adequate face seal in cases where employees have beards or other facial hair. Please accept my apology for the delay in our response.