Standard Threshold Shift in hearing level
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.
September 4, 1991
Mr. Paul V. Williams
Health and Safety Specialist
General Dynamics
Land Systems Division
Post Office Box 2072
Warren, Michigan 48090-2072
Dear Mr. Williams: