Workplace Hazardous Materials Information System (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 labelling of containers, the provision of safety data sheets (SDSs) and worker education and training programs.

Amendments to the Hazardous Products Regulations

Get information about the amendments, transition period, and your obligations as a supplier.

Protecting confidential business information (CBI)

Learn about how a WHMIS supplier can protect and maintain the confidentiality of certain chemicals used in workplace hazardous products through the claim for exemption process.

Hazardous substance assessments

Hazardous substance assessments are technical documents that describe the classification of chemicals in the different hazard classes outlined in the Hazardous Products Act and its regulations. These documents have been produced by Health Canada as educational and information resources and can support suppliers in developing a safety data sheet.

Contacts for WHMIS

See details to contact Health Canada about WHMIS or to contact the federal, provincial and territorial occupational health and safety regulators.

Lifting the interim policy for cleaning products for use, handling or storage in workplaces (COVID-19)

Health Canada created an interim policy to help make available certain workplace hazardous cleaning products that did not fully meet certain labelling and information regulatory requirements during the COVID-19 pandemic. The interim policy was lifted on April 29, 2022.