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.

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Date Title Standard Number
Bloodborne pathogen standard and its possible applicability to a nursing registry. 1910.1030
Questions (24) asking for clarification of recordkeeping. 1904 - Table of Contents
Recordkeeping for employees from a temporary employment agency. 1904 - Table of Contents
Recording lost workdays on the OSHA 200 Log. 1904 - Table of Contents
Clarification of termination of employment for OSHA 200 log. 1904 - Table of Contents
OSHA recordability for dislocated joints. 1904 - Table of Contents
Medical treatment recording on 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
Recording Hepatitis B and HIV occupational exposures. 1904 - Table of Contents
Hearing Conservation Amendment to the OSHA 200 log. 1904 - Table of Contents
Maintaining Medical Records for Employees Subject to Medical Surveillance 1910.120
Applicability of bloodborne pathogens to non-incorporated business owners and discarded feminine hygiene products. 1910.1030
HHCs as it applies to storing of flammable liquids. 1910.119
Clarifications of Interpretations and Citation Policy 1910.38, 1910.157
Policy for warning tags on scaffolds. 1926.200
Energy control devices lockable design requiremnets. 1910.147
Clarification of "laboratory" and "process" relative to process safety management standard. 1910.119