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
Safe distance as it applies to fire protection for battery charging areas. 1
Training requirements under 1910.120 for employees providing services which do not disturb the hazardous materials on a waste site. 1
National Electrical Manufacturers Association (NEMA) Warning Alert Regarding Imported Circuit Breaker Panels 1
Overwarning on Hazard Labels 1
Use of direct reading instruments to comply with the monitoring requirements in the Hazardous Waste Operation and Emergency Response interim final rule. 1
HCS training for employees contracted to jobs working under the supervision of another employer. 1
Inability to rig service platforms at the roof level. 1
Maintenance of and access to employee medical records. 3
Cooperation in State or Local Criminal Prosecutions 0
Letter to Lawrence N. Curcio from Thomas Shepich concerning requirements of the HCS on labeling of IARC category 2B carcinogens 1
Request for Guidance Relative to Guardrail Requirements for Ladder Jack Scaffolds used on Construction sites. 1
Clarification of Material Safety Data Sheet Requirements Under the Hazard Communication Standard. 1
Small Purchase Procedures 0
Hi-Lo "Hard Hat" Radiant Oil Heaters 1
Applicability of the Benzene Standard and respirator requirements for bulk gasoline storage facilities. 1
Cyanide Antidote Kits 0
Use of Oxygen for Decompression Underground Tunnel Workers. 1
Office workers routinely performing short clean up procedures using chemicals covered by the HCS. 1
Procedural policy regarding elevated work platforms suspended from cranes or derricks used in general industry applications. 1
Application of 29 CFR 1910.106 and/or NFPA 30-1987 to Flammable Liquid Storage and Dispensing Operations of Polyester Resin 1