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
HCS 2012 labeling of refrigerant containers 1910.1200, 1910.1200(c), 1910.1200(b)(4), 1910.1200(f)(1), 1910.1200(f)(5), 1910.1200(f)(6)
Labeling refrigerant cylinders 1910.1200(c), 1910.1200(f)(1), 1910.1200(f)
Container labeling requirements for importer under HCS 2012 1910.1200, 1910.1200(c), 1910.1200(f)(1)
Responsible party's address and phone number on SDSs and labels 1910.1200(c)
Requirements for labeling of products shipped for export to domestic and international destinations, under the revised Hazard Communication Standard (HCS 2012) 1910.1200(f)(1)(i), 1910.1200(f)(1)(ii), 1910.1200(f)(1)(iii), 1910.1200(f)(1)(iv), 1910.1200(f)(1)(v), 1910.1200(f)(1)(vi)
By-product hazard information included in safety data sheet, Section 2 1910.1200, 1910.1200(g)(2)
Safety data sheets for custom blend fertilizers 1910.1200, 1910.1200(b)(1), 1910.1200(f)(1), 1910.1200(f)(5), 1910.1200(g)(1), 1910.1200(g)(4)
HCS Applicability of lithium battery or a lithium battery-powered devices 1910.1200, 1910.1200(b)(1), 1910.1200(b)(6), 1910.1200(c)
Labeling requirements for absorbent clay products in various packaging configurations 1910.1200(d), 1910.1200(f)(1)(i), 1910.1200(f)(1)(ii), 1910.1200(f)(1)(iii), 1910.1200(f)(1)(iv), 1910.1200(f)(1)(v), 1910.1200(f)(1)(vi)
Hazard Communication classifications 1910.1200(b)(1), 1910.1200(d)(1), 1910.1200(d)(2), 1910.1200 App B
Requirements for labeling of products shipped for export only to non-U.S. destinations, under the revised Hazard Communication Standard (HCS 2012) 1910.1200(f)(1)
Enforcement discretion for distributors on limited continued use of HCS 1994 labels 1910.1200
Inspection Guidance for Poultry Slaughtering and Poultry Processing Establishments 1904 - Table of Contents, 1910 Subpart E, 1910.95, 1910.119, 1910.132, 1910.141, 1910.147, 1910.212, 1910.1200, 1913.10
HCS requirements for RCRA and non-RCRA waste 1910.1200, 1910.1200(b)(6), 1910.1200(c)
The labeling elements required on the safety data sheet (SDS) under the Hazard Communication Standard (HCS 2012) 1910.1200(g)(2)
Container labeling of non-pesticide agrichemical products packaged for shipment 1910.132(d), 1910.1200, 1910.1200(f)(1)
HCS labeling of imports and exports 1910.1200, 1910.1200(b)(4), 1910.1200(f)(1), 1910.1200(f)(6)
Labeling of small containers in the laboratory 1910.1200(f)(6), 1910.1200(f)(6)(i), 1910.1200(f)(6)(ii), 1910.1450(e), 1910.1450(h)(1)
Use of 1994 HCS labels on containers packaged for shipment 1910.1200, 1910.1200(j)(2)
Hazard communication pictograms; single color and economic feasibility 1910.1200(f), 1910.1200 App C