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
01/04/1994	Laptop computer usage and repetitive motion disorders.
01/03/1994	Release of hazardous chemicals from gas calibration bottles.	1910.1200
01/03/1994	Hazard communication standard and pharmaceuticals	1910.1200, 1910.1200(b)(6)(v), 1910.1200(b)(6)(vi), 1910.1200(b)(6)(viii), 1910.1200(g)(1)
12/30/1993	Federal posting requirements applicable to an employer with no more than 10 employees.	1903 - Table of Contents, 1903.2, 1903.3, 1903.16, 1904 - Table of Contents, 1904.16, 1910.146
12/30/1993	Federal posting requirements.	1903 - Table of Contents, 1910.146(c)(2), 1910.146(e)(3)
12/30/1993	Eyeglasses with exposed metal parts.	1910.333
12/30/1993	Processes involving workplace explosive.	1910.119
12/30/1993	HHCs as it applies to manufacturing processes involving workplace explosives.	1910.119
12/30/1993	HHCs as it applies to ethylene oxide (ETO).	1910.119
12/30/1993	Applicability of the Process Safety Management manufacturing processes involving workplace explosives.	1910.109, 1910.119
12/28/1993	First Aid in the workplace.	1910.151, 1910.266(c)(1)(vii)
12/27/1993	Fall protection and pipe racks.	1926.502(d)
12/22/1993	The Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard as they apply to veterinary drugs.	1910.1200
12/14/1993	HHCs as it applies to strategic petroleum reserve storage sites.	1910.119
12/10/1993	HHCs as it applies to end use applications of acrolein.	1910.119
12/09/1993	Proper equipment for testing ground-fault circuit interrupters (GFCIs).	1926.404(b)(1)(ii)
12/09/1993	Tunnel boring machine equipment.	1910.7(a), 1926.449, 1926.403(a), 1926.800(s)
12/03/1993	General industry standards to construction activities.	1926.20(d)(2)
12/01/1993	Keller ladder proper set up.	1926.32, 1926.1060(a)(1)(iii)
11/29/1993	Hoists that have two upper "hoist limit switches".	1910.179

Letters of Interpretation

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