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.

NOTICE:

How to Request a Letter of Interpretation

Filters


Date Title Standard Number
Using compressed air for cleaning an employee's body and clothing 1910.242, 1910.242(b), 1917.154
Recording bloodborne related cases on the OSHA 200 Log. 1904 - Table of Contents
Confined space entry. 1910.146
Proper recording of second degree burns on the OSHA 200 Log. 1904 - Table of Contents
Soil classification. 1926 Subpart P
Respirator selection requirements prescribed in the OSHA standard on benzene exposure. 1910.1028
Proper recording of restricted work activity on the OSHA 200 Log. 1904 - Table of Contents
Laptop computer usage and repetitive motion disorders.
Release of hazardous chemicals from gas calibration bottles. 1910.1200
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)
Processes involving workplace explosive. 1910.119
Eyeglasses with exposed metal parts. 1910.333
Federal posting requirements. 1903 - Table of Contents, 1910.146(c)(2), 1910.146(e)(3)
HHCs as it applies to manufacturing processes involving workplace explosives. 1910.119
HHCs as it applies to ethylene oxide (ETO). 1910.119
Applicability of the Process Safety Management manufacturing processes involving workplace explosives. 1910.109, 1910.119
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
First Aid in the workplace. 1910.151, 1910.266(c)(1)(vii)
Fall protection and pipe racks. 1926.502(d)
The Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard as they apply to veterinary drugs. 1910.1200