Contains general information about the 2015 Workplace Hazardous Materials Information System (WHMIS) program. It summarizes key changes from the original WHMIS program, describes the three main elements of WHMIS (labels, safety data sheets, and education and training programs), and outlines the responsibilities of suppliers, employers, and workers for these elements. It also offers useful information about the kinds of hazards and chemical characteristics of products covered by WHMIS, and two checklists: one on implementing a WHMIS program and the other on WHMIS education and training for workers.