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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How to Request a Letter of Interpretation

Date	Title	Standard Number
11/09/1990	Litigation relative to the severance of a hand by a high school student while using a radial arm saw.	1910.213(h)
11/09/1990	Container labeling requirements under the OSHA Hazard Communication Standard	1910.1200(f)
11/09/1990	First responders, training, hazardous materials technician, etc.	1910.120, 1910.120(q)(6)(ii), 1910.120(q)(6)(iii)
11/07/1990	Lockout/Tagout-Corrugated Metal Industry.	1910.147
11/02/1990	Nuisance spills are not considered emergencies.	1910.120, 1910.1200
11/01/1990	Occupational Exposure to Hazardous Chemicals in Laboratories.	1910.1450
10/23/1990	Grading Designations for Southern Pine Scaffold Planks	1910.28(a)(9), 1926.451(a)(10)
10/23/1990	Full time contract personnel at plant facility considered "workplace employees"	1910.120(q)(11)
10/19/1990	Clarification of Paragraph H.1 of OSHA Notice CPL 2, and On-site Contractor Issues.	1910.10
10/18/1990	Hazard communication program on site and standard covering electrical installation, maintenance or repair.	1910.1200(e), 1910.331, 1910.332
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
10/15/1990	Control of Hazardous Energy Sources Lockout/Tagout.	1910.147
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