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.

Filters


Date Title Standard Number
Confined Space provisions of 29 CFR 1910.261 in light of the promulgation of 29 CFR 1910.146 1910.261, 1910.146
Request for speaker to for-profit organization denied.
Permit-Required Confined Space (PRCS). 1910.146
Cord and plug connected electric equipment. 1910.147
Review of product, EscapeRite.
Bungee jumping from cranes. 1910 - Table of Contents
Labeling for TB and HIV-1. 1910.1030
Exposure to hypodermic needles in recycling center. 1910.1030
Portable and vehicle mounted generators must be "approved" on the job site. 1926.403, 1926.449
When an OSHA standard references an earlier version of the ANSI standard.
Guidelines for platforms and walkways on cranes. 1910.179(b), 1910.179(d)
MSDS requirements 1910.1200
Sulfuric acid and the PSM standard. 1910.119
Review of Reeves Sleeve stretcher. 1917.26(d), 1918.97(d), 1915.98(d), 1926.651(g)(2)(i)
Application of standard to more than health care workers 1910.1030
Response to emergency in "normal work area" definition. 1910.120
PSM Chemicals, unless specified, commercial grades less than 99 percent purity. 1910.119
Standards applicable to eyewash and show equipment.
Several OSHA injury and illness recordkeeping issues. 1904 - Table of Contents
Use of a tuberculocidal disinfectant to clean contaminated areas. 1910.1030