This document provides an overview of WHMIS training, including information on both WHMIS 1988 and the updated WHMIS 2015 system. It discusses the objectives of WHMIS in identifying hazardous materials and protecting workers. Key aspects of WHMIS 2015 compared to the previous 1988 version are outlined, such as the new hazard classes and pictogram labeling system. The roles and responsibilities of suppliers, employers and workers are defined. Hazard classifications, safety data sheets, and the importance of personal protective equipment are also summarized.