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
PPE for overexposure to the sun's radiation. 1910.132(a)
Recordability of heavy metals in blood/urine. 1904 - Table of Contents
Workers must be protected from hazards of heated (hot) surfaces. 1910.261(k)(11), 1910.262(c)(9), 1910.23(c)(3), 1910.147, 1910.132(a)
Requirements for work with materials containing less than 1 percent asbestos. 1926.1101(b), 1926.1101(g)
Fall protection for the Elaminator 300 Insulation System. 1926 Subpart M, 1926 Subpart R, 1926.105(a)
Requirements for surface conditioning wheels (3M Scotch-Brite). 1910.94(b), 1910.215
Landing platforms for fixed ladders. 1910.27, 1910.27(d)(2)
Requirements for posting signs for PRCSs. 1910.146(c)(2)
Aerial lift regulations; fall protection for scissor lifts. 1926.451, 1926.451(g)(1)(vii), 1926.452(w), 1926.453
Use of flexible cords for connection of appliances; scaffold base plates. 1926.404(a)(2), 1926.404(b)(1)(ii), 1926.405(g), 1926.451(c)(2)
Enforcement Policy Regarding Arborists, SIC 0783 (Ornamental Shrub and Tree Services). 1910.266
Asbestos tests, evaluations, and sample collections: qualified persons. 1926.1101(k)(5)(ii)(B)
Recordability of blood-PCB levels. 1904 - Table of Contents
D'AX wheels are to be guarded as cutting saws 1926.300(b)
Training and PPE for employees performing tests on equipment. 1910.333(a)(1), 1910.335(a)(2)(i), 1910.331(a), 1910.334(c)(1)
Use of plastic containers and drums for flammable liquids storage. 1910.106(d)
Stress cone work: worker protection and job briefings 1910.269, 1910.269(c), 1910.269(g), 1910.269(l), 1910.269(l)(2)(i), 1910.269(m), 1910.269(m)(3)(ix), 1910.269(m)(3)(viii), 1910.269(n)
Load ratings for portable ladders. 1910.25, 1910.26
Demonstrating equivalency for powered platform tie-in guides. 1910.66(e)(2)(i), 1910.66(e)(2)(iii)
Moving mobile (Baker) scaffolds; locking casters and wheels. 1926.452(w), 1926.452(w)(2), 1926.452(w)(3), 1926.452(w)(6)(iv)