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
Trailer mounted vacuum system and bagging station used in asbestos abatement. 1926.1101(e)
Training requirements for hazardous materials technicians and on- scene incident commanders. 1910.120(q)(6)
Hemox Safe Deposit system for needles and syringes used with bloodborne pathogens 1910.1030
Laboratory Standard does not cover routine tests supporting production but non-routine, non-production-related tests are covered 1910.1450
Medical surveillance requirements of the formaldehyde standard 1910.1048(l)
Distribution of free copies of 29 CFR 1910 and 1926
Limitation on Enforcement of Certain Subsections of the Excavation Standard. 1975.1, 1926.651(g)(1)(iii), 1926.651(g)(2)(i)
OSHA's Hazard Communication Standard. 1910.1200
South Carolina's state policy on payment for hepatitis B vaccine
Considerations for "incidental" spills cleaned up by maintenance personnel to satisfy the definition of "emergency response" 1910.120(a)(3)
Removal activities involving underground storage tanks. 1910.120
Criteria used to determine training requirements for employees working in contaminated and uncontaminated areas. 1910.120(c)
Interpretation of "high degree of acute toxicity" under the laboratory standard 1910.1450(e)(3)(viii), 1910.1450(b)
Applicability of Field Sanitation Standard to Reforestation Activities. 1928.110
Flammable and Combustible Liquids Code Handbook. 1910.106, 1910.110
Application of the Hazardous Waste Operations and Emergency Response Standard to Specific Operations 1910.120(q)
Recordkeeping criteria for cumulative trauma disorders. 1910.1020
Regarding the application of the OSHA's Hazard Communication Standard to the labeling of fabricated products. 1910.1200
OSHA acceptance and treatment of abatement methods specified in the proposed standard 1910.28, Fall Protection Systems. 1910.28
Anti-two blocking devices on cranes. 1926.550