WHMIS is a short form for Workplace Hazardous Materials Information System. It is a comprehensive plan for providing information on the safe use of hazardous materials used in Canadian workplaces. Information is provided by means of product labels, material safety data sheets (MSDS) and worker education programs.

The main components of WHMIS are hazard identification and product classification, labelling, material safety data sheets, and worker training and education.

Yes. WHMIS became law through a series of complementary federal, provincial and territorial legislation that became effective October 31, 1988.

The majority of the "information" requirements (and exemptions) of WHMIS legislation were incorporated into the HAZARDOUS PRODUCTS ACT and the HAZARDOUS MATERIALS INFORMATION REVIEW ACT. These apply to all of Canada. Regulations made under these acts include:

• Controlled Products Regulations,
• Ingredient Disclosure List,
• Hazardous Materials Information Review Act Appeal Board Procedures Regulations,
• Hazardous Materials Information Review Regulations.

The occupational health and safety components of WHMIS that apply to federal employees and others covered by the Canada Labour Code (CLC) are specified in the CLC and the Canadian Occupational Safety and Health Regulations (Part X).

The following acts and regulations apply to workers and employers covered by the provincial jurisdictions: