WHMIS 2015 – All workers who work with, or may be exposed to, a hazardous product must be trained so that they can recognize, understand, properly store, and respond appropriately to hazards in the workplace. WHMIS stands for the Workplace Hazardous Materials Information System. Incorporated in WHMIS 2015 is the Globally Harmonized System (GHS). It is the international standard managed by the United Nations.