G/TBT/N/USA/1697/Add.4  
 
21 May 2024  
(24-3895) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  21 May 2024, is being circulated at the request of the delegation 
of the United States of America . 
 
_______________  
 
 
Title:  Hazard Communication Standard  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[X] Notified measure published - date: 20 May 2024  
[X] Notified measure enters into force - date: 19 July 2024  
[X] Text of final measure available from1:  
89 Federal Register (FR) 44144, Title 29 Code of Federal Regulations (CFR) Part 1910:  
https://www.govinfo.gov/content/pkg/FR -2024-05-20/html/2024 -08568.htm  
https://www.govinfo.gov/content/pkg/FR -2024-05-20/pdf/2024 -08568.pdf  
https://members.wto.org/crnattachments/202 4/TBT/USA/final_measure/24_03319_00
_e.pdf  
https://members.wto.org/crnattachments/2024/TBT/USA/final_measure/24_03319_01
_e.pdf  
https://members.wto.org/crnattachments/2024/TBT/USA/final_measure/24_03319_02
_e.pdf  
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[ ] Content or scope of notified measure changed  and text available from1:  
New deadline for comments (if applicable):   
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
Description:  OSHA is amending the Hazard Communication Standard (HCS) to conform to the 
United Nations' Globally Harmonized System of Classification and Labelling of Chemicals (GHS), 
primarily Revision 7 (Rev. 7), address issues that arose during the implementation of the 2012 
update to the HCS, and provide better alignment with other U.S. agencies and international trading 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1697/Add.4  
 
- 2 - 
 
  partners, while enhancing the effectiveness of the standard. Consistent with Executive Order 13563 
and the Regulatory Flexibility Act, which call fo r assessment and, where appropriate, modification 
and improvement of existing rules, OSHA has reviewed the existing HCS. The agency has determined 
that the revisions in this final rule will enhance the effectiveness of the HCS by ensuring employees 
are app ropriately apprised of the chemical hazards to which they may be exposed, thus reducing 
the incidence of chemical -related occupational illnesses and injuries. The modifications to the 
standard include revised criteria for classification of certain health a nd physical hazards, revised 
provisions for updating labels, new labeling provisions for small containers, new provisions related 
to trade secrets, technical amendments related to the contents of safety data sheets (SDSs), and 
related revisions to definiti ons of terms used in the standard.  
This final rule is effective 19 July 2024. The incorporation by reference of certain publications listed 
in this final rule is approved by the Director of the Federal Register as of 19 July 2024. The 
incorporation by reference of certain other publications listed in the rule was approved by the 
Director as of 15 July 2019.  
Title 29 Code of Federal Regulations (CFR) Pa rt 1910  
This final rule and previous actions notified under the symbol G/TBT/N/USA/1697  are identifi ed by 
Docket Number OSHA -2019-0001. The Docket Folder is available on Regulations.gov at 
https://www.regulations.gov/docket/OSHA -2019-0001/document  and provides access to primary 
and supporting documents as well as comments received. Documents are also accessible from 
Regulations.gov  by searching the Docket Number.  
__________