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

Filters


Date Title Standard Number
OSHA’s Noise Standard as it applies to temporary employees audiometric testing 1910.95(g)
Escape-only respirators 1910.134, 1910.134(c)(1), 1910.134(e)(1), 1910.120
Determining whether the injury would apply to the work-related exception personal task and outside the assigned working hours 1904 - Table of Contents, 1904.5(b)(2)(v)
Maintenance work in a manufacturing area after silica-generating tasks have been stopped 1910.1053, 1910.1053(d)(1), 1910.1053(e)(4), 1910.1053(g)(1)
Types of construction work excluded from the Silica standard 1926.1153, 1926.1153(a), 1926.1153(c)(1), 1926.1153(d), 1926.1153(e), 1926.1153(f)(1), 1926.1153(h), 1926.1153(i)
HCS Labeling Requirements for Bulk Shipments of Small Packages 1910.1200(f)(1)(i), 1910.1200(f)(1)(ii), 1910.1200(f)(1)(iii), 1910.1200(f)(1)(iv)
Electronic worker training records 1910
PSM and Aerosol (Flammable Gas) Containers Stored in Warehouses/Distribution Centers 1910.119, 1910.119(a), 1910.119(d)(3)(ii)
First aid for bleeding control 1910.151(a), 1910.151(b), 1910.266(i)(7), 1910.269(b)(1)(ii), 1910.410(a)(3), 1915.87(c)(5), 1915.87(d), 1917.26, 1918.97(b), 1926.50(c), 1926.50(d)(1)
Termination of the January 2009 Corporate-Wide Settlement Agreement between United Parcel Service (UPS) and OSHA; Enforcement of 20 CFR 1910.37(a)(3) and 29 CFR 1910.36(g)(2) 1910.36(g)(2), 1910.37(a)(3)
Ladder Grasp Requirements 1910.23(b)(12)
Clarification of soft tissue massage 1904 - Table of Contents, 1904.7(b)(5)(ii)
Definition of Confined Space, as it may apply to large product heating and aging furnaces 1910.146, 1910.25(c)(3)
HAZCOM's hazardous waste exemption as related to EPA's universal wastes 1910.1200(b)(6)(i)
Personal Fall Arrest System or Ladder Safety System on Fixed Ladders 1910.28, 1910.28(b)(9)(i)(A), 1910.28(b)(9)(i)(B), 1910.28(b)(9)(i)(C), 1910.28(b)(9)(i)(D)
29 CFR 1926.950(c); Subpart V; CPL 02-00-124; Multi-Employer Citation Policy 1926.950
Clarification on rigging for hoisting multiple bundles of construction materials 1926.251, 1926.753(e), 1926.1425(c)
OSHA Approval of Cr Sampling 1910.1026 - Index, 1960.17 - Index
Clarification on how to count calendar days resulting in days away from work 1904 - Table of Contents, 1904.7(b)(3)
OSHA's Noise Standard as it applies to Supra Aural Phones for audiometric testing 1910.95(h)