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.

Date	Title	Standard Number
10/15/1990	Point-of-operation guards for drill presses and lathes.	1910.212(a)(1)
10/15/1990	Control systems used for emergency evacuation are required to be listed by Underwriter's Laboratories.	1910.303, 1910.303(a)
10/15/1990	Hazard Communication Standard.	1910.1200
10/12/1990	Requirements for providing MSDS information for carcinogens which are a residue in a mixture	1910.1200(d)(5)
10/11/1990	Quality control laboratories are not expected to be covered under the Laboratory Standard	1910.1450
10/10/1990	Emergency eye and face wash products.	1910.133
10/09/1990	Review Commission Decision - Stone Container Corporation.
10/05/1990	Enforcement policy of not citing employees for violations for the safety and health standards.
10/04/1990	Material Safety Data Sheets for methanol, windshield washer concentrate, and windshield washer solvent.	1910.1200
10/03/1990	Criteria to evaluate employee exposure in order to trigger the training requirements of 1910.120(e)	1910.120(a)(1), 1910.120(c), 1910.120(e), 1910.1200(e)
09/27/1990	Ionizing radiation hazards in the workplace	1910.1096, 1926.53
09/24/1990	Standards for Rollover Protective Structures.	1928 - Table of Contents
09/24/1990	Fall Protection Standards for Pole Climbing.	1926.501
09/24/1990	Driver training and seat belt use.	1975.1
09/17/1990	Blasters Circuit Testers.	1926.906, 1910.109(e)(4)
09/17/1990	Request for Interpretation of ANSI B30.11 as it relates to Yale KEL 2-ton chain hoists.	1910.179
09/14/1990	Whether additional handrails are required on the grated walkways provided on one side of the 13 belt conveyors.	1910.23(e)(1), 1910.23(c)(2)
09/14/1990	Perimeter Guarding Utilizing Wire Rope.	1910.750, 1926.500
09/13/1990	Recapping Needles.
09/12/1990	Hazard Communication Standard, pertinent to distributors of hazardous chemicals.	1910.1200

Letters of Interpretation

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