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
12/30/1992	OSHA's Hazard Communication Standard.	1910.1200
12/30/1992	Clarification of training certification.	1910.120
12/29/1992	OSHA's Hazard Communication Standard.	1910.1200
12/29/1992	Requirements for 'area classification drawings' for petrochemical plants.	1910.307
12/24/1992	Guidance on whether "patch test kits" are exempt from the labeling requirements of HCS.	1910.1200
12/23/1992	Lockout/tagout as applies to contractor employers with employees at electric power generation, transmission and distribution work sites.	1910.147
12/23/1992	Construction activities and operations and the bloodborne pathogens standard.	1910.1030
12/23/1992	EPA CERCLA regulations and site monitoring requirements of 1910.120.	1910.120
12/22/1992	Requirements of hazard communication standard for listing chemicals.	1910.1200(e)(1)(i)
12/22/1992	Updated material safety data sheets.	1910.1200
12/21/1992	Bloodborne pathogens standard relating to various types or classes of individuals.	1910.1030
12/21/1992	PSM threshold quantity; EPA regulated and permitted RCRA Hazardous waste treatment.	1910.119
12/21/1992	Two-hand control device used to operate a mechanical power press in continuous mode.	1910.217
12/21/1992	OSHA's Occupational Exposure to Bloodborne Pathogens Standard.	1910.1030
12/16/1992	OSHA does not have jurisdiction over state employees or inmates.	1975.5
12/16/1992	Safety latches on hooks.	1917.45, 1918.81
12/16/1992	Occupational exposure to bloodborne pathogens relating to nurse assistant students.	1910.1030
12/16/1992	Alarm systems for employee evacuation and/or response.	1910.38, 1910.165, 1910.120, 1910.1200
12/15/1992	Powered platforms for building maintenance to "a permanently installed suspended scaffold."	1910.66
12/15/1992	Bloodborne pathogens impact on non-health care industries	1910.1030