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
Handling of medical instruments. 1910.1030
Repair of Cahn balances and Canon camcorders, and maintenance of air cylinders.
Annual metric conversion report.
Request for approval of rope ladders.
Interpretation of the Process Safety Management standard. 1910.119
Interpretation of the Process Safety Management standard. 1910.119
Outer Continental Shelf lands--OSHA and the U.S. Coast Guard. 1910.119
Bloodborne pathogens training requirements. 1910.1030
Hepatitis B vaccination series requirements of bloodborne pathogens standard. 1910.1030
Most frequently asked questions concerning the bloodborne pathogens standard 1910.1030
Inspection of cranes used at a construction site 1926.550(a)(5), 1926.550(a)(6), 1926.32, 1919.1
Definition of an "article" under the hazard communication standard. 1910.1200(b)(6)(iv)
Training for plant maintenance personnel and HAZWOPER. 1910.120
Hierarchy of air contaminant controls; respirators for emergencies. 1910.134(a)(1), 1910.134(d), 1910.38(a), 1910.120(q)(1), 1926.65(q)(1)
Recordkeeping requirements as applied to sheltered workshops. 1904 - Table of Contents
Bloodborne pathogens standard and the construction industry. 1910.1030
Support zone personnel at a CERCLA thermal destruction site. 1910.120
Preservation of Criminal Evidence and Acceptability of Dry Cleaning under 29 CFR 1910.1030 1910.1030
Registration of sterilants, tuberculocidal disinfectants, and anti-microbial products. 1910.1030
The hotel/motel industry and the bloodborne pathogens standard. 1910.1030