Letters of Interpretation

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. Each 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.

These letters of interpretation and the standards they address may not apply to OSHA State Plans. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or additional requirements. Please see OSHA-approved State Plans for more information.

NOTICE:

How to Request a Letter of Interpretation

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Date Title Standard Number
Clarification of HAZWOPER to a cleanup operation at a solid waste management unit. 1910.120, 1910.1025
MSDS labelling requirements. 1910.1200(g)
Bloodborne Pathogen standard as it applies to containers used to discard disposable sharps. 1910.1030
Bloodborne pathogen standard as it applies to nail salons. 1910.1030
Bloodborne pathogen standard's application to physicians. 1910.1030
Review of draft regional interpretations, OSHA commercial diving standard. 1910.423(d)
Bloodborne pathogen standard and its possible applicability to a nursing registry. 1910.1030
OSHA recordability for dislocated joints. 1904 - Table of Contents
Medical treatment recording on OSHA 200 log. 1904 - Table of Contents
Questions (24) asking for clarification of recordkeeping. 1904 - Table of Contents
Recording lost workdays on the OSHA 200 Log. 1904 - Table of Contents
Recordkeeping for employees from a temporary employment agency. 1904 - Table of Contents
Clarification of termination of employment for OSHA 200 log. 1904 - Table of Contents
OSHA rules pertaining to the wearing of hard hats by employees who are members of certain religious groups. 1910.132, 1910.135
Definition of an emergency response. 1910.120
Occupational noise, including hearing conservation, in construction work. 1910.95, 1926.52
Formaldehyde (37% by weight or greater) in the Process Safety Management Standard 1910.119
Hearing Conservation Amendment to the OSHA 200 log. 1904 - Table of Contents
Recording Hepatitis B and HIV occupational exposures. 1904 - Table of Contents
Maintaining Medical Records for Employees Subject to Medical Surveillance 1910.120