How long must exposure and medical records be kept by the employer?

• A. 5 years
• B. 10 years
• C. 30 years
• D. Permanent

Answer: (C)

The requirement for how long exposure and medical records must be maintained by an employer is based on regulations set by OSHA (Occupational Safety and Health Administration). According to these regulations, an employer must keep records of employee exposure to hazardous materials and any related medical records for a period of 30 years. This long duration is critical because certain health effects from hazardous substance exposure may not manifest until many years later. Thus, retaining these records for 30 years ensures that appropriate medical histories are accessible in case an employee develops health problems linked to their work exposure, facilitating better medical response and accountability.