In Canada, statute law establishes a framework for the regulations and incorporates provisions for the enforcement of health and safety law. This chapter explores how labor got the progressive Workplace Hazardous Materials Information System (WHMIS) agreement (1985) and how the agreement has been implemented in the following years. The implementation of the model WHMIS workplace regulation in the twelve health and safety jurisdictions in Canada. From the beginning, WHMIS was envisaged as a triad: a label, a data sheet, and a worker education program. In the final agreement, the label was for immediate safe handling of the chemical product and there was a link on the label to the data sheet, which was a further elaboration of hazard information. Trade secrets could be claimed only over the identity of ingredients, over information that would reveal a trade secret or the portion of the ingredient in a product.