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
An interpretation of the electric power generation standard 1910.269
Several injury and illness recordkeeping requirements. 1904 - Table of Contents
Restricted work activity.
Proper recording procedures for back cases.
OSHA injury and illness recordkeeping issues.
Electric power generation, transmission, and distribution standard regarding pole top rescue. 1910.269
Hazard Communication Standard. 1910.1200(g)(6)
Compliance with OSHA's Asbestos Standard - Composite Bulk Samples. 1926.1101
The dental industry's concerns regarding compliance with certain provisions of the Hazard Communication Standard (HCS). 1910.1200
Equivalent safe access. 1926.451
OSHA Asbestos standard. 1926.1101
Material Safety Data Sheets. 1910.1200, 1910.1200(g)(1), 1910.1200(g)(8)
Training certification requirements under the OSHA HAZWOPER. 1910.120
Information required on Material Safety Data Sheets (MSDSs). 1910.1200
Fall protection for the entertainment industry under the OSH Act of 1970. 1910 Subpart D, 1910.132, 1910.12
Cross-view back-up mirrors on delivery trucks 1910 - Table of Contents
Employee access rights to the OSHA Log 200.
Proper recording of an injury case involving a punctured eardrum.
Calculation methods used under the air contaminants standard for extended work shifts. 1910.1025, 1926.62
Fall Protection requirements in the Construction Standard. 1910 - Table of Contents, 1910.23, 1926 - Table of Contents