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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Date Title Standard Number
Spray painting in aircraft hangars 1910.94
Requirements for employees working atop cargo containers being handled by container gantry cranes. 1918.85(j), 1918.85(k)
Training for on-site consultants at asbestos abatement projects. 1910.1001(j)(7), 1926.1101(o)(3)(i)
Recordkeeping requirements for employees on interstate or international travel. 1904 - Table of Contents
Fault plays no role in the OSHA recordkeeping system. 1904.2
OSHA's coke oven emissions standard is not applicable to the construction industry 1926.1129
Use of construction equipment around explosive loaded bore holes. 1926.905(h)
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)
Garment color specifications for flagmen; requirements for traffic signs and barricades. 1926.201(a)(4), 1926.200(g), 1926.202
Powered industrial truck training: different types of trucks. 1910.178(l)
Securing of a platform (metal decking) on a manually propelled scaffold. 1926.451, 1926.452(w)(6)
Fall protection and foot protection for power line workers. 1910.269(g), 1910.132
Training of workers who are not "qualified persons" under 1910.269. 1910.269(a)(2)(ii), 1910.269(x)
U.S. Postal Service's equivalent to the OSHA 200 form. 1904.2(a)
Documentation included/exempted in medical records;medical and injury/illness record retention times. 1910.1020(c)(6), 1910.1020(d)(1)(i)
One MSDS may apply to multiple complex mixtures having similar hazards. 1910.1200(g)(4)
Fixed ladder requirements for ski lift towers. 1910.27, 1910.27(d)(1)(ii), 1910.27(d)(5)
Applicability of the Laboratory Standard; MSDS and labeling requirements. 1910.1450(a), 1910.1200(g), 1910.1200(f)(1)
Access and working space requirements for electric equipment (600V or less). 1910.303(g)(1)(i)