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.

NOTICE:

How to Request a Letter of Interpretation

Filters


Date Title Standard Number
Requirements for recapping of Needles.
Training required for clean-up of hazardous waste and hazardous substances 1910.120, 1910.1200
Hazard communication in construction - general contractor responsibilities. 1910.1200
Obligations contractors have, and if contractors and loggers, the latter as an employer, share responsibility for safety conditions in the forest. 1910.266, 1910.266(h)(2)(ii)
Requirements for training in hazardous waste for DOE personnel 1910.120
Training requirements for drivers hauling hazardous waste 1910.120, 1910.120(e), 1910.120(e)(1), 1910.120(e)(2), 1910.120(e)(3), 1910.120(e)(4), 1910.120(e)(9)
Revision of STD 1-11.5 as a result of DOT changes.
Responsibilities for hospitals to comply with HAZWOPER standard. 1910.120
Testing of type C soil is not necessary if employees are adequately protected. 1926.650, 1926.652
Error corrected in response of Sept. 4, 1990 concerning fire hazard associated with TCE 1910.120
Recording Of Hearing Loss and Cumulative Trauma Disorders 1910.95
Securing a personal fall arrest lanyard to a portable hook ladder as a safety measure 1910 - Table of Contents
Training required for emergency response at industrial facilities 1910.120, 1910.134
Interpretation of 1910.147, related to floating fish processors. 1910.147
Grain elevator inspection activities 1910.272
Development of increasing safety use of cranes
OSHA's Hazard Communication Standard as it applies to the janitorial service industry. 1910.1200
Emergency response by fire company and utility workers, and required training. 1910.120
Whether or not OSHA Standard 1910.147, lockout/tagout would apply to motor vehicles. 1910.147
Use of link chains as lanyards and contractor's responsibility to supply safety nets for worker protection 1926.104