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

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Date Title Standard Number
Fall protection for vendors delivering roofing materials. 1926.501, 1926.502(d)
Request for variance from digester building exit requirements. 1910.261(g)(9), 1905.11(b)(4)
The Dangers of Carbon Dioxide Exposure.
Approval for cut and puncture resistant gloves. 1910.1030
Consumer Products that Contain Hazardous Chemicals. 1910.1020, 1910.1200
Machine guarding. 1910.147
OSHA's position on PROTRAC, a company's computerized fire and safety bar code management system. 1910.157
Medical services and first aid requirements. 1926.50
Glove bag use. 1910.1001, 1926.1101, 1915.1001
Notification of standard action, final rule; corrections and technical amendments. 1902 - Table of Contents, 1910 - Table of Contents, 1915 - Table of Contents, 1926 - Table of Contents, 1928 - Table of Contents, 1950 - Table of Contents, 1951
Regulations pertaining to the application of butterfly bandages. 1904 - Table of Contents
Letter requesting interpretation of the OSHA electrical standards as they apply to employees using insulated hand tools 1910.269, 1910.333, 1910.335
Interpretation regarding completion of the OSHA 101 Supplementary Record. 1904 - Table of Contents
Worker protection for employees incinerating hazardous waste on cement plant property. 1910.119, 1910.120, 1910.1200
The Effect of the 1904 Rulemaking Effort on the De Minimis Citation Policy. 1904 - Table of Contents
Pressure testing using compressed air. 1926.350(c)(2), 1926.350(c)(3)
Electrical generators in hospitals and the control of hazardous energy. 1910.147
Variance exposure level for silver metal. 1910.134, 1910.1000
Interpretation for questions related to compliance with NFPA 33 (1995 edition). 1910.107
IDLH values. 1910.120, 1926.65