WHMIS is a shared system with two halves that people mix up. The supplier half is federal: Health Canada, the Hazardous Products Act and its regulations decide what a hazardous product is, what the label says and what the sixteen sections of the safety data sheet must contain. The workplace half is provincial or federal-labour: the employer’s duty to hold current sheets, make them available and train workers to use them.
What it means in practice
- The three-year rule is the supplier’s, not yours. A supplier must update the sheet within 90 days of significant new hazard information, and the sheet’s currency is judged against that duty. An employer working from a sheet that has not been reviewed in years should be asking the supplier, not filing it.
- Sections 8 and 7 are the ones that reach the floor — exposure controls and personal protection, then handling and storage. They feed the hazard assessment and the workplace label.
- Availability means available. Readily accessible to workers in the work area and to the joint committee, on paper or electronically with a fallback when the network is down.
- A workplace label is required whenever a product is decanted or the supplier label is illegible, and it is a different document with different minimum content.
- Training is on the product and the process, not on the format of the sheet. A worker who can find section 8 but does not know which respirator cartridge the job needs has not been trained.
What it is not
It is not a hazard assessment. The sheet describes a product; the risk depends on quantity, process, ventilation and duration. Two plants using the same product with the same sheet do not have the same exposure.
It is not an MSDS. The pre-2015 material safety data sheet had no fixed format. Anything still labelled MSDS in a binder is, by definition, out of date.
And it is not the European FDS, despite the same sixteen sections. That document is Article 31 and Annex II of REACH, with its own update duties and, for some substances, an exposure scenario annexed that has no Canadian equivalent. A sheet imported from a European supplier does not by itself satisfy the Hazardous Products Regulations.