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

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Date Title Standard Number
Employee notification as covered under 29 CFR 1926.62(d)(8)(i). 1926.62
Health effects of prolonged exposure to paint related materials. 1910.1200
Employers' obligation to pay for personal protective equipment. 1910.132
Maintenance of medical records in the electronic form is acceptable to the agency. 1910.1020
Classification of sweepers and scrubbers. 1910.178, 1910.307
The use of ozone gas from ozone generators in a large room. 1910.1000 TABLE Z-1 - Index
Policy for Mantoux skin testing.
The impact on the roofing industry from OSHA's fall protection standard. 1926.501(b)(10), 1926.501(b)(11)
Requirements under the Ethylene Oxide Standards 1910.1047(g)
A clarification of the definition of an outer flange on an abrasive wheel. 1910.243
Coverage under the Process Safety Management Standard.
Portable electric lighting. 1926.405
Selection of hand protection for cold environments. 1910.138
The new fall protection provisions of Subpart M and their application to various types of aerial lifts 1910 - Table of Contents, 1926 - Table of Contents
Acceptable use of reinforcing steel bent to a horizontal position to eliminate impalement hazards. 1926.701(b)
Compliance with the Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard (HCS) and the requirement for Material Safety Data Sheets (MSDS). 1910.1200
Safety plans as set forth in Subpart M -- Fall Protection for the Construction Industry. 1926.502(k), 1926 Subpart M App E
FIRM Change: Minimum Serious Willful Penalty.
OSHA Tuberculosis (TB) regulations. 1910.1001, 1915.1001, 1926.1101
Suprotek PC100 protective rebar cover. 1926.701