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
Training requirements where "low magnitude of risk of exposure to hazardous substances" exists. 1910.120
Timber shoring for trenches 1926 - Table of Contents
Responsibility for recordkeeping when employees provided by leasing company. 1904 - Table of Contents
Inspection of Crane Hooks. 1910.179
Training for employees at CERCLA and RCRA sites. 1910.120
OSHA does not certify instructors in HAZWOPER. 1910.120
OSHA does not cover volunteers, but EPA does in Hazardous Waste Operations. 1975.3, 1910.120
Ground Fault Circuit Interrupter Information 1926.404(b)(1)
Policy regarding fall protection for steel erection operations 1926.105(a)
Fall Protection during Steel Erection 1926.105
Acid gas cartridges containing hexavalent chromium. 1910.1200
Maintaining Workplace Acetylene Cylinders 1910.253
Required Frequency of Periodic Wire Rope Inspections for Lifting Equipment 1910.184(d), 1905.11
Outside, above ground, tanks used for storage of flammable and combustible liquids 1910.106
OSHA does not certify individuals or approve training programs for HAZWOPER. 1910.120
Fall Protection requirements for steel erection activities 1926.105(a), 1926.750
Information on ground fault circuit Interrupters 1926.404(b)(1), 1926.20(b)(2)
Specialized devices used to control mechanical power presses. 1910.217
Allowable tolerance for the height of guardrails 1926.451(a)(5)
Exxon's Baton Roughe Refinery Decision to Classify Marine Terminal Docks as Unclassified in Applying NFPA-NEC 1910 - Table of Contents, 1917.1, 1918 - Table of Contents