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
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)
Questions and answers on AIDS.
Hearing conservation programs and "ear blasts" on communication headsets 1910.95
Coverage of wood dust under the Hazard Communication Standard (HCS) 1910.1200
OSHA is currently considering criteria for recording occupational hearing loss on the OSHA form 200. 1910.95
The potential hazards associated with the use of horizontal lifelines affixed to two-point suspension (Type T) powered platforms. 1910.66
Standards applicable to the process of wrapping meat in plastic. 1910.1200
Reduction of noise exposure for metal spray operations. 1910.95
Applicability of the revised Hazard Communication Standard to the grain industry. 1910.1200
The applicability of General Industry Standards to sign posting operations. 1910.12
Need to supply a material safety data sheet for oil lubricated compressors. 1910.1200
Acceptable guarding for continuous cycling boneless meat tenderizers. 1910.212(a)(1), 1910.212(a)(3)(ii)
Compliance advisory on safety requirements for window washing.
Response to a request regarding remedies for airborne pollutants. 1910 Subpart Z