Letters of Interpretation | Occupational Safety and Health Administration

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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How to Request a Letter of Interpretation

Date	Title	Standard Number
05/22/1989	29 CFR 1910.1025 - Respiratory Protection	1910.1025
05/22/1989	The adoption of an OSHA standard requiring the use of a flagman to direct in-plant locomotive movement.
05/16/1989	A Ground-Fault Circuit Interrupter may not be used in lieu of a tester or meter that can test for continuity of the equipment grounding conductor.	1926.404
05/16/1989	The "Sky Genie" device.	1926.451
05/15/1989	IBP Settlement Agreement
05/12/1989	Oven inspections required by 1910.263(l)(9)(ii).	1910.263(l)(9)(ii)
05/11/1989	Barge based cranes and 1926.550(g).	1926.550
05/11/1989	Definition of Hazardous Waste.	1910.120
05/10/1989	1910.120 exemption for no exposure situations and tiered training requirments.	1910.120
05/08/1989	Standards for a "cable grab" device that will not allow the free end of the wire rope to exit the hoist.	1926.451
05/03/1989	HCS requirements applicable to oil and gas producers.	1910.1200
05/02/1989	Consumer product exemption under the OSHA Hazard Communication Standard (HCS).	1910.1200(a)(4)(iv)
05/02/1989	List of establishments that have received inspection exemption certificates.
05/01/1989	HCS does not require a particular labeling system's code on the MSDS.	1910.1200
04/26/1989	Recommended changes for asbestos sampling from SLCAL.	1910.1001
04/26/1989	Establishment Listing of the Corporatewide Settlement Agreements.	1910.1001
04/25/1989	Respiratory protection requirements for sour crude oil tank operations.	1910.134
04/24/1989	MSDS distribution requirements for chemical manufacturers and importers, distributors and retail distributors.	1910.1200(g)
04/17/1989	Ruling as to whether blank OSHA-200 logs must be maintained at each jobsite where no recordable injuries or illnesses have occurred.	1904.2(a)
04/17/1989	Interpretation on whether an injury constituted a restriction of work activity.	1904 - Table of Contents