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
Additional Requirements for Safeguarding Typographical Errors. 1910.217
The storage of flammable and combustible liquids. 1910.106
The meaning of concurrent when related to two-hand controls on Mechanical Power Presses. 1910.211
Interpretation of Lockouts. 1910.261(b)(1)
The safety of telephone company personnel working under inclement weather conditions and also while exposed to induced currents and energized conductors. 1910.268, 1910.268(m)
The size of opening in the wire mesh mounted in the canopy structures of wheel and crawler tractors. 1926.604
Guarding of Punch Presses. 1910.217
Overhead and Gantry Cranes. 1910.179
Inspection of Compressed Gas Cylinders. 1910.166
Paint Spraying Operations. 1910.107
Temporary planked or metal-decked floors. 1926.500
Man-lift standards and interpretations. 1926.550
"Electrical Disconnect Means" as they relate to center pivot irrigation systems. 1928.57(c)(5)(ii)
The guarding requirements for riveting machines. 1910.212
Clip-on Side Shields. 1910.133(b)(2)
Clarification of the Standards and terminology used in relation to maintenance-of-way for electric utility line. 1910.309
Flammable and Combustible Liquids. 1910.106
OSHA regulations governing the use of personal protective equipment. 1910.132(a), 1926.95(a), 1915.152(a)
Accessibility of a hospital or physician in terms of distance and travel time. 1926.50(c)
Floor Loading Signs. 1910.22