In 2015, Canada’s requirements for the hazard classification and communication for workplace chemicals (Workplace Hazardous Materials Information System or WHMIS) were updated to incorporate the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). These requirements are now known as WHMIS 2015. After a transition period from WHMIS 1988 that ended on December 1, 2018, all workplace chemicals must now meet the hazard classification and communication requirements established by WHMIS 2015.

As GHS is periodically updated, WHMIS may also be amended to strengthen worker health and safety in Canada and facilitate international trade. Stay current about WHMIS requirements in each jurisdiction, and access useful resources, by checking the portal regularly. is provided through the collaboration of Health Canada, the regulatory jurisdictions across Canada, and the Canadian Centre for Occupational Health and Safety (CCOHS).


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