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:
