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.

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How to Request a Letter of Interpretation

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Date Title Standard Number
OSHA's policy regarding the use of EPA-registered disinfectants. 1910.1030(c)(4)(ii)(A)
Recording injuries that occur at secondary facility of the same company. 1904.2
Child Labor: Guidance Criteria Considerations for Handling of Cases To Be Proposed for Violation-By-Violation. 1903.15
Child Labor: Probability Assessment and Good Faith Penalty Adjustment Considerations. 1903.15
Clarification of OSHA's citation policy for repeated violations. 1903.15
Child Labor: Responding to Complaints Alleging Hazards to Workers Under 18 Years of Age. 1903.11
Child Labor: Importance of the Referral System Established in the MOU between the ESA Wage and Hour Division and OSHA. 1975.3(c)
Applicability of the PSM standard to a flammable liquid manufacturing process. 1910.119, 1910.119(a)(1)(ii)(B), 1910.119(e), 1926.64, 1926.64(a)(1)(ii)(B), 1926.64(e)
Storage of gas cylinders on construction sites; clarification of "in storage." 1926.350(a)(10)
Employer's responsibility to provide time and transportation for Hepatitis B vaccinations. 1910.1030(f)(1)(ii)
Training for on-site consultants at asbestos abatement projects. 1910.1001(j)(7), 1926.1101(o)(3)(i)
Fall protection on concrete formwork in residential construction. 1926.501(b)(13)
Requirements for employees working atop cargo containers being handled by container gantry cranes. 1918.85(j), 1918.85(k)
Spray painting in aircraft hangars 1910.94
Fault plays no role in the OSHA recordkeeping system. 1904.2
Recordkeeping requirements for employees on interstate or international travel. 1904 - Table of Contents
Use of construction equipment around explosive loaded bore holes. 1926.905(h)
OSHA's coke oven emissions standard is not applicable to the construction industry 1926.1129
Clarification of "surfacing material" under the asbestos standard. 1926.1101(b)
Scaffolds: lifelines, support lines, and suspension ropes cannot have a common anchor point. 1926.451(g)(3)(iv), 1926.452(v)(1)