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
Whether or not guards are required for fan blades on an electrical transformer. 1910.212
Electrical safety related work practices standard. 1910.147
Guarding of Unused portion of metal cutting bandsaws. 1910.212
"Approved" and "Acceptable" equipment has been determined to be safe by a qualified electrical testing laboratory. 1926.403, 1926.449
Grain Handling Facilities - Inspection Guidance and Standard. 1910.272
Tie-in guides standard. 1910.66
Welding and Noise in confined space 1926.52, 1926.21, 1926.353
Laws and regulations on fire protection in the workplace. 1910 Subpart L
Sampling of Resilient Floor Covering. 1910.1001
Medical surveillance of HAZWOPER and employer responsibility to employees. 1910.120
OSHA's jurisdiction over volunteer fire fighters. 1910.120
Review of product literature.
Training and HAZWOPER. 1910.120, 1910.120(q)(1), 1910.120(q)(6)(ii), 1910.120(q)(6)(iii), 1910.38
Use of general protective equipment and tools by employees when working near exposed energized conductors or circuit parts in the workplace 1910.137, 1910.335, 1910.399
Mechanical power press requirements and platen presses. 1910.217
Recording of hearing loss on the OSHA 200 Log. 1910.95, 1904 - Table of Contents
Enforcement of Bloodborne Pathogen Standard 1910.1030
Hazwoper minimum training for an On Scene Incident Commander. 1910.120
OSHA 200 Form Location 1904.2
OSHA 200 Log for work relationship and illness. 1904 - Table of Contents