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

Filters


Date Title Standard Number
Requirements for labels in a language other than English. 1910.1200(f)(9)
Hexavalent chromium in photocopier toners. 1910.1200
Clarification of requirements for 40 hours of training.; Site specific training is required for employees who receive general training. 1910.1200, 1910.120(e)(2)
Coverage of wood dust under the Hazard Communication Standard (HCS) 1910.1200
Standards applicable to the process of wrapping meat in plastic. 1910.1200
Applicability of the revised Hazard Communication Standard to the grain industry. 1910.1200
Need to supply a material safety data sheet for oil lubricated compressors. 1910.1200
Labeling and MSDSs for a stump router cutter head which has carbide tips on the cutter teeth. 1910.1200(f), 1910.1200(g)
Clarification of Material Safety Data Sheet Requirements Under the Hazard Communication Standard. 1910.1200
Additional requirements for distributors from the August 24, 1987 expansion of the HCS. 1910.1200
Retention requirements for superseded MSDSs. 1910.1200(g)
Definitions of target organ and hazards of chemicals under the Hazard Communication Standard. 1910.1200
Application of the Hazard Communication Standard to art materials industry. 1910.1200
National Paint and Coatings Association's (NPCA) Health Effects Labeling Approach 1910.1200
Responsibility for Material Safety Data Sheets (MSDS) Under the Hazard Communication Standard (HCS) 1910.1200
Presence of chromium in monocomponent photocopier toner is under investigation. 1910.1200
Applicability of the HCS to manufacturers of steel coils. 1910.1200
Cancer warning labels for formaldehyde and products containing formaldehyde 1910.1200(f)
The HCS's requirement for target organ effects on labels for shipped containers of hazardous chemicals. 1910.1200
Training requirements in the hazardous waste interim final rule, 1910.120(e)(2) and (3). 1910.120(e)(2), 1910.120(e)(3)