Letters of Interpretation | Occupational Safety and Health Administration

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

Date	Title	Standard Number
09/05/1990	Interpretation of Standards.	1910.252
09/05/1990	Training not required if employees not likely to be exposed to or participate in emergency response activities.	1910.120
09/04/1990	Smoking and occupational exposure to asbestos	1910.1001(i)(4), 1926.1101(j)(4)
08/31/1990	First Aid supplies required by businesses	1910.151(b)
08/31/1990	Construction multi-employer worksites.	1910.12(c), 1926 - Table of Contents, 1926.13, 1926.16
08/27/1990	Negative Pressure Glovebag Usage in Asbestos Removal	1910.1001
08/24/1990	Product endorsement policy and telephone headsets.	1910.95, 1910.7
08/23/1990	Portam Process asbestos abatement equipment use for asbestos removal.	1926.1101, 1926.1101(e), 1926.1101(g)(5)(i)
08/22/1990	Safety Jurisdiction Over Refitted Propane Tanks Used to Store Malodorant Agents at Pipeline Facilities.
08/22/1990	OSHA's Hazard Communication Standard.	1910.1200
08/10/1990	OSHA'S Occupational Exposure to Lead Standard.	1910.1025
08/10/1990	Trailer mounted vacuum system and bagging station used in asbestos abatement.	1926.1101(e)
08/09/1990	Training requirements for hazardous materials technicians and on- scene incident commanders.	1910.120(q)(6)
08/08/1990	Laboratory Standard does not cover routine tests supporting production but non-routine, non-production-related tests are covered	1910.1450
08/08/1990	Medical surveillance requirements of the formaldehyde standard	1910.1048(l)
08/08/1990	Hemox Safe Deposit system for needles and syringes used with bloodborne pathogens	1910.1030
08/03/1990	Distribution of free copies of 29 CFR 1910 and 1926
08/01/1990	OSHA's Hazard Communication Standard.	1910.1200
08/01/1990	Limitation on Enforcement of Certain Subsections of the Excavation Standard.	1975.1, 1926.651(g)(1)(iii), 1926.651(g)(2)(i)
07/31/1990	Removal activities involving underground storage tanks.	1910.120