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

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Date Title Standard Number
Effect of flexi-place on the mission and jurisdiction of OSHA. 1975.1
NFPA, Life Safety Code and Means of Egress. 1910 Subpart E, 1910.35, 1910.38
Scheduling and prioritizing on a "worst-first" basis. 1910.119
Hazard warning label requirements. 1910.1048
OSHA does not endorse commercial products. 1910.1030
Pregnancy care centers administering urine pregnancy tests and the BBP standard. 1910.1030
Free standing/boom supported personnel hoist. 1926.552(c)(3)
Testing requirements as they apply to powered platform installations permanently dedicated to building maintenance. 1910.66
Confined space standard for general industry. 1910.146, 1926.21, 1926.651
Clarification of "near proximity".
OSHA's system of inspection priorities. 1903 - Table of Contents
Personal protective equipment, general requirements and employer responsibility. 1910.132
Several bloodborne pathogen issues. 1904 - Table of Contents
Counting lost workdays for temporary employees. 1904 - Table of Contents
Coating processes covered by the PSM standard. 1910.119
Documentation establishing the boiling points or the 10 percent points of distillation. 1910.119
Use of microwave systems to convert regulated waste into waste free of biohazardous material. 1910.1030
"Eyelet" and "four-slide" machines are covered by 1910.212. 1910.212
Clarification of OSHA Policy on Employer Abatement Assistance. 1903.19
OSHA does not approve or endorse products. 1910.1030