Environmental and Workplace Health – WHMIS

The Workplace Hazardous Materials Information System (WHMIS) is Canada’s national hazard communication standard. The key elements of the system are hazard classification, cautionary labeling of containers, the provision of (material) safety data sheets ((M)SDSs) and worker education and training programs.

The basis for hazard classification and communication in WHMIS is changing. With the corporation of the Globally Harmonized System of Classification and Labeling for chemicals (GHS) in WHMIS, the hazard classification and communication requirements of WHMIS have been aligned with those used in the United States and other Canadian trading partners. WHMIS is in a period of transition between two-hazard communication regimes- WHMIS 1988 and WHMIS 2015 (which incorporates the GHS).


Learn about WHMIS and how it is implemented in Canada, including its administration and legal foundation (Hazardous Product Act (HPA) and associated regulations). This topic also provides on excluded sectors.

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