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
01/26/1994	Exemption from wearing hard hats.	1910.132, 1910.135
01/19/1994	Statement of compliance for skylights.
01/19/1994	Passenger seat belts not required on school buses	1926.601(b)(9)
01/14/1994	Using compressed air for cleaning an employee's body and clothing	1910.242, 1910.242(b), 1917.154
01/14/1994	Posting of the OSHA notice;jurisdiction over state and military personnel	1903.2(a), 1975.5, 1952 - Table of Contents, 1960.1(e)
01/13/1994	Confined space entry.	1910.146
01/13/1994	Recording bloodborne related cases on the OSHA 200 Log.	1904 - Table of Contents
01/10/1994	Proper recording of second degree burns on the OSHA 200 Log.	1904 - Table of Contents
01/10/1994	Respirator selection requirements prescribed in the OSHA standard on benzene exposure.	1910.1028
01/10/1994	Soil classification.	1926 Subpart P
01/06/1994	Proper recording of restricted work activity on the OSHA 200 Log.	1904 - Table of Contents
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.	1903 - Table of Contents, 1910.146(c)(2), 1910.146(e)(3)
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	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