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.

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Date	Title	Standard Number
08/11/1986	Applicability of HCS standard to shipment of truck parts.	1910.1200
08/05/1986	Establishing carcinogenicity of sodium and potassium salts of chromate and dichromate.	1910.1200(d)(4)
07/02/1986	Requirements for fingerprint powders containing carbon black under the Hazard Communication Standard.	1910.1200
07/02/1986	Requirements under the Hazard Communication standard for visibility of labels on shipments of palletized bags.	1910.1200
06/30/1986	Application of the HCS to Borax Powered Hand Soap.	1910.1200
06/17/1986	Application of the Hazard Communication standard to waste oils.	1910.1200
05/28/1986	Indication of Carcinogenicity on Material Safety Data Sheets	1910.1200
05/23/1986	Application of the HCS to non-manufacturing scrap dealers who collect waste metal for resale.	1910.1200
05/06/1986	Criteria for severe solvent refinement under the Hazard Communication Standard.	1910.1200
05/01/1986	Applicability of the Hazard Communication standard to pesticides.	1910.1200(f)(5)(i), 1910.1200(f)(5)(ii), 1910.1200(f)(6)
04/30/1986	Labeling requirements for containers of polyvinyl chloride.	1910.1017(l)(4), 1910.1017(b)(6), 1910.1200
04/08/1986	Requirements of the Hazard Communication Standard as it applies to the metal chips and other scrap material.	1910.1200
04/07/1986	Labeling and MSDS requirements for product containing trace quantities of ethylene oxide.; Criterion that must be satisfied in order to assert that a product or operation is exempt for the EtO Standar	1910.1200, 1910.1047(a)(2)
03/21/1986	Application of the HCS to flavor extracts	1910.1200
03/20/1986	Applicability of the HCS to castings.	1910.1200
03/17/1986	Application of the Hazard Communication Standard to lift trucks.	1910.1200
03/12/1986	Hazard evaluation requirements under the Hazard Communication standard.	1910.1200
03/11/1986	MSDS and labeling requirements for copper or aluminum wire or metal products.	1910.1200
03/04/1986	Classification of foundry products such as castings in relation to the HCS.	1910.1200
02/14/1986	MSDS should be distributed for welding wire containing hazardous chemicals.	1910.1200(g)