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.

Date	Title	Standard Number
11/17/1989	Identification of a standard threshold shift (STS) for individuals with a very poor sense of hearing.	1910.95(g)(10)
11/15/1989	Request for Interpretation of ANSI B30.11.
11/14/1989	Fall protection provision for iron workers during "connecting" activities.	1926.28
11/14/1989	OSHA standards that may apply to one-man radio-controlled locomotives in the steel industry.	1910.261
11/13/1989	Monitoring employee exposures to airborne benzene.	1910.1028
11/06/1989	Applicability of the Field Sanitation Standard.	1928.110
11/03/1989	Exhaust air in spray operations.
10/16/1989	Recordkeeping interpretation on calculation of LWDI rates when a company has three manufacturing establishments on one site.	1904.12(g)(1)
10/09/1989	Interpretation on the application of 1910.120 to clean-up of water-borne releases of hazardous substances.	1910.120
10/04/1989	Two different design requirements for handrail and scaffolding.	1926.451(a)(1), 1926.451(g)(4)(vii)
10/04/1989	Cranes and personnel hoists.	1926.550, 1926.550(g)(3)(ii)(D), 1926.550(g)(3)(ii)(A), 1926.550(g)(3)(ii)(C)
09/14/1989	Cumulative trauma disorder risk factor abatement
09/12/1989	Requests for Enforcement Data from the IMIS System
09/11/1989	Application of 1910.120 to post-emergency clean-up operations including oil spill clean-ups.	1910.120(q)
09/07/1989	29 CFR 1910.120 Application to Underground Storage Tanks at Service Stations	1910.120
09/07/1989	OSHA's Hazard Communication Standard.	1926.59 , 1910.1200(h)
09/05/1989	The Field Sanitation Standard.	1928.110
09/05/1989	Policy change regarding the scope of coverage of the field sanitation standard.	1928.110
09/01/1989	Hospital technicians required to attend HCS training and a clarification of coverage of pharmaceuticals under the HCS.	1910.1200(h)
08/31/1989	Application of the training requirements under 1910.120(e) to underwater divers.	1910.120(e)

Letters of Interpretation

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