Which regulation requires employers to inform employees of health effects resulting from contact with hazardous substances?

• A. Hazard Communication Standard
• B. OSHA Act
• C. The Right to Know Act
• D. Employee Safety Act

Answer: (C)

The main idea here is that workers have a right to know the health risks of the chemicals they encounter. This obligation is captured by the Right to Know concept, which is put into practice through hazard communication requirements. Employers must inform employees about chemical hazards and potential health effects, before and during work with those substances. In concrete terms, this means labels on containers, accessible Safety Data Sheets describing health effects and first-aid measures, and training that explains how exposure occurs and how to protect oneself. This information enables workers to recognize risks, understand potential health impacts, and take appropriate precautions. The broader OSHA Act provides the overall framework, while hazard communication is the specific mechanism that ensures this particular information is conveyed to employees.