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.

Filters


Date Title Standard Number
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
Requirements for labels in a language other than English. 1910.1200(f)(9)
Review of Electrical Utilities Procedures for Compliance with Subpart K of Part 1926. 1910.304
Hexavalent chromium in photocopier toners. 1910.1200
Information on the health hazard of ozone produced by common office copiers and on radon gas testing devices. 1910.1000
Lead standard: multiple physician review and medical removal. 1910.1025(j)(3)(iii), 1910.1025(k)(1)(ii), 1910.1025(k)(2)
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
Rollover protective structures for material handling equipment. 1926.1000
Requirement for pump jack scaffolds. 1926.452(j)(7)
Clarification of requirements for 40 hours of training.; Site specific training is required for employees who receive general training. 1910.1200, 1910.120(e)(2)
Hearing conservation programs and "ear blasts" on communication headsets 1910.95
Coverage of wood dust under the Hazard Communication Standard (HCS) 1910.1200
Questions and answers on AIDS.
OSHA is currently considering criteria for recording occupational hearing loss on the OSHA form 200. 1910.95