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
Applicability of the bloodborne pathogens standard to persons who self-administer injectable medications. 1910.1030(b), 1910.1030(d)(2)(i), 1910.1030(d)(2)(vii)(B), 1910.1030(d)(4)(iii)(A)
Building owner's requirement to determine and communicate the hazrds from installed ACM and PACM. 1926.1101(b), 1926.1101(k)(1), 1926.1101(k)(2), 1926.1101(k)(3)
29 CFR Part 1904 OSHA Recordkeeping Regulation applies only within the jurisdictional boundaries of the United States and certain locations listed in OSHAct Sec. 4(a). 1904 - Table of Contents, 1904.5
What OSHA construction standards govern the use of pneumatic hand tools used in construction for cleaning concrete forms, bridge decks and roads? 1926.302(b)
Lockout/tagout requirements for servicing manually-controlled vertical/horizontal milling machine and drill press tool changes. 1910 Subpart O, 1910 Subpart S, 1910.147, 1910.147(a)(2)(ii), 1910.147(a)(2)(iii)(A), 1910.212, 1910.212(a)(3)(iv)
Revision of the applicability of the steel erection standard to pre-cast concrete erection work interpretation. 1926.704(e)
Respirator breathing air cylinders must be maintained in a fully chargd state, regardless of cylinder size, and recharged when pressure falls below 90% of full charge. 1910.134(h)(3)(iii)
Approval requirements for replacement, modification, repair, or rehabilitation of electrical utilization equipment. 1910.7, 1910.302(b)(2), 1910.303(a), 1910.399
Requirements for step-through fixed ladder side rails that might be used as climbing aid. 1910.27, 1910.27(b)(2)
Engineering controls for removal of asbestos-containing construction mastic (Class II work operations). 1926.1101(g)(7), 1926.1101(g)(8)
PIT operator's triennial performance evaluation requires demonstration of both knowledge and skills for safe operation of vehicle. 1910.178, 1910.178(l)(4)
Adjusting work practices to comply with cave-in protection requirements in §1926.652, Requirements for protective systems in excavations. 1926.652(g)(2)
Walkways within scaffolds, guardrails, and planking. 1926.450(b), 1926.451(b)(1), 1926.451(g)(1)(v)
Use of OSHA Logo restricted to OSHA and Departmental materials.
The requirements for washing facilities on construction jobsites. 1926.51(f)(1), 1928.110
Formaldehyde exposure and ergonomic hazards in the embalming/funeral home industry. 1910.1048(c), 1910.1048(d), 1910.1048(n)
Machine guarding and exposure to hazards from robotic laundry shuttles. 1910.147, 1910.212, 1910.212(a)(1)
Acceptability of a fixed ramp with a one-in-four slope on an industrial conveyor. 1910.23, 1910.132
Update to September 26, 2002 interpretation letter regrading the guarding of live parts electrical requirements. 1910.303(g)(1), 1910.303(g)(2)
Use of Transmission Electron Microscopy (TEM) instead of Phase Contrast Microscopy (PCM) to determine asbestos concentrations in air samples. 1926.1101