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.

Filters


Date Title Standard Number
The flash point of Bio T products. 1910.106
Actively involved; generators; CERCLA 101(33) substances. 1910.120
Motor starter circuits and energy isolation devices 1910.147
The working environment of railroad train operating employees. 1975.1
OSHA currently accepts U.S. Coast Guard devices approved as a Type I PFD, Type II PFD, Type III PFD or Type V PFD, or their equivalent. 1926.106, 1915.158, 1917.95, 1918.105
Confirmation on lockout/tagout, specifically with the standard covering periodic inspections. 1910.147
Determination as to whether ConVault aboveground tanks are required to be diked to comply with the 1910.106(b)(2)(vii) standard on storage of flammable liquids. 1910.106
Grain Handling Facilities Standard. 1910.272
Committing a de minimis violation when using an insert earphone designated as ER-3A. 1910.95
Lockout/Tagout with regards to the cleanup and sanitizing of machinery and equipment in the meatpacking industry. 1910.147
Characteristics of the Quick-Link device for the replacement of tire chain links. 1910.212(a)
Labeling Provisions of the Hazard Communication Standard 1910.1200(f)(6)
The term "wheel chocks" and whether the employment of one chock would satisfy the requirements of the Occupational Safety and Health Administration. 1910.178, 1910.178(k)(1)
Signaling and Barricades to Highway Construction Projects. 1926.201, 1926.202
Employee injury caused by John Deere bulldozers.
Advance First-aid Requirements of 1910.120 1910.120(q)(3)(vi)
1910.120 Application to Petroleum Product Spills or Releases Subject to State Codes 1910.120
OSHA compliance with Axe heads. 1910.266
Fall Protection while climbing and working on a steel lattice structure resembling a communication tower. 1926.501
Clearance of EEOC Policy Guidance on the Supreme Court Decision in the Johnson Controls, Inc. case.