Letters of Interpretation

Lapse in Appropriations

For workplace safety and health, please call 800-321-6742; for mine safety and health, please call 800-746-1553; for Job Corps, please call 800-733-5627 and for Wage and Hour, please call 866-487-9243 (866-4-US-WAGE).  This website is currently not being updated due to the suspension of Federal government services. The last update to the site was 1/31/2026.  Updates to the site will start again when the Federal government resumes operations.

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

Date	Title	Standard Number
04/24/1992	Pre-existing condition and/or specific event/exposure grey areas.	1904 - Table of Contents
04/24/1992	Injury/illness at temporary duty location and recordkeeping requirement.	1904 - Table of Contents
04/21/1992	Employment of individuals with disabilities.
04/21/1992	Eating and drinking in area where potentially infectious material exists	1910.1030
04/20/1992	Temporary storage carrier for oxygen and acetylene cylinders.	1910.253
04/17/1992	Hazards to and personal protective equipment for hands and torsos of retail meat cutters.	1910.132
04/17/1992	Coverage of Janitorial Workers Under Bloodborne Pathogens Standard	1910.1030
04/17/1992	Feminine Hygiene Products	1910.1030
04/16/1992	Bloodborne pathogens.	1910.1030
04/16/1992	Rear fly extension ladders manufactured by Keller Industries.	1926.1060, 1926.32
04/15/1992	Rules addressing competent persons and qualified persons.	1926.32
04/15/1992	Bloodborne Pathogens	1910.1030
04/15/1992	Guidance on wearing gloves.	1910.1030
04/15/1992	Requirements for cord sets connected to permanent wiring.	1910.12(b), 1926.404(b)(1)
04/15/1992	Use of plywood for shoring and support systems in trenches and excavations.	1926.652
04/15/1992	Use of cranes having replacement parts	1926.550
04/15/1992	Inspections of derricks and cranes	1926.550
04/14/1992	Peak Performance System
04/09/1992	Handwashing requirements.	1910.1030
04/08/1992	Bloodborne pathogen standard as it relates to top-loading washing machines vs. front-loading washing machines.	1910.1030

Lapse in Appropriations

Letters of Interpretation

NOTICE:

Filters