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

Filters


Date Title Standard Number
National Recognized Testing Laboratory Standard. 1910.7
Approved Courses for Competent Person Training under the Asbestos Construction Standard. 1926.58
Failure of Wire Rope and Banding Steel Guardrails to provide Protection. 1926.500
Response to Freedom of Information Act request for standards and guidelines related to working around aircraft. 1910.95, 1910.1000
Application of PEL for benzene to extended workshifts 1910.1028
Christmas Treeing, Steel Erection. 1926.550, 1926.751
Encon Tuff-Spec safety spectacle meets the intent of 1910.133. 1910.133
Medical Surveillance requirements of the Benzene Standard. 1910.1028
Inquiry on monitoring device for cigarette smoke in buildings. 1910.1000
The Scott "formaldehyde" chin-style canister respirators are acceptable. 1910.1048
Response to a request for information concerning the OSHA standard for carbon monoxide. 1910.1000
Review of Electrical Utilities Procedures for Compliance with Subpart K of Part 1926. 1910.304
Requirements for labels in a language other than English. 1910.1200(f)(9)
Hexavalent chromium in photocopier toners. 1910.1200
Lead standard: multiple physician review and medical removal. 1910.1025(j)(3)(iii), 1910.1025(k)(1)(ii), 1910.1025(k)(2)
Information on the health hazard of ozone produced by common office copiers and on radon gas testing devices. 1910.1000
Posting of the Occupational Noise Exposure Standard. 1910.95(l)(1)
Hooks on overhaul ball assemblies shall be of a type that can be closed and locked. 1926.550
The process for employee transfer from the aerial device to a fixed structure.
Standards applicable to Epon 826, 827, and Epon Curing Agent Z. 1910.1000 TABLE Z-1, 1910.1000 TABLE Z-2, 1910.1000 TABLE Z-3