The Worker Handbook contains more than 100 diagrams that illustrate in simple, but technically correct terms, the concepts in MSDSs and WHMIS labels. The Worker Handbook is suitable for use in classroom sessions guided by an instructor, as well as self-study. Also included are common questions and answers about WHMIS, information found in the MSDS and WHMIS label, and information about symbols and labelling required on hazardous consumer products. Lastly, the Worker Handbook contains a test for checking mastery of the information.