What identifies the classes of hazards in WHMIS?

In the Workplace Hazardous Materials Information System (WHMIS), the identification of classes of hazards is primarily done through the use of symbols. These symbols are standardized graphics that visually represent various types of chemical hazards. Each symbol is designed to convey important safety information at a glance, helping workers quickly understand the potential risks associated with a particular material.

For example, a flame symbol indicates a flammable material, while a skull and crossbones signify a toxic substance. This visual approach enhances communication about hazards in the workplace, making it easier for employees to recognize the dangers present and handle materials safely. The use of symbols instead of numbers or letters emphasizes the importance of immediate recognition and promotes better safety compliance in various working environments.