The Workplace Hazardous Materials Information System (WHMIS) is Canada's national standard for communicating information about hazardous workplace products.

WHMIS is incorporated into the Occupational Health and Safety Act and is law in the province of Ontario. This legislation states that if you work with, or in proximity to controlled products, the employer must ensure the information you need to work safely with those hazardous products is available to you and understood.

See the WHMIS 2015 Program for more information.


All University of Waterloo employees are required to complete the WHMIS 2015 (SO2017) online training module. 

Additional resources and information