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
10/12/1993	Use of battery power operated cleaning equipment in hazardous locations.	1910.307(c)
10/08/1993	The meaning of the word "entrapment" as in the Permit Required Confined Space (PRCS) standard.	1910.146
10/08/1993	Confined space standard for general industry.	1910.146, 1926.21, 1926.651
10/08/1993	Evaluation and testing of stainless steel stub ends.
10/07/1993	Effect of flexi-place on the mission and jurisdiction of OSHA.	1975.1
10/01/1993	NFPA, Life Safety Code and Means of Egress.	1910 Subpart E, 1910.35, 1910.38
09/29/1993	Scheduling and prioritizing on a "worst-first" basis.	1910.119
09/27/1993	Hazard warning label requirements.	1910.1048
09/27/1993	OSHA does not endorse commercial products.	1910.1030
09/24/1993	Pregnancy care centers administering urine pregnancy tests and the BBP standard.	1910.1030
09/24/1993	Free standing/boom supported personnel hoist.	1926.552(c)(3)
09/23/1993	Testing requirements as they apply to powered platform installations permanently dedicated to building maintenance.	1910.66
09/23/1993	Confined space standard for general industry.	1910.146, 1926.21, 1926.651
09/22/1993	Clarification of "near proximity".
09/22/1993	OSHA's system of inspection priorities.	1903 - Table of Contents
09/20/1993	Documentation establishing the boiling points or the 10 percent points of distillation.	1910.119
09/20/1993	Personal protective equipment, general requirements and employer responsibility.	1910.132
09/20/1993	Coating processes covered by the PSM standard.	1910.119
09/20/1993	Counting lost workdays for temporary employees.	1904 - Table of Contents
09/20/1993	Several bloodborne pathogen issues.	1904 - Table of Contents