How long must exposure records for toxic substances be kept after employment ends?

Exposure records for toxic substances must be retained for at least 30 years after an employee's employment ends in accordance with regulations established by the Occupational Safety and Health Administration (OSHA). This long retention period is crucial for ongoing health monitoring and understanding potential long-term effects of exposure to hazardous materials.

The rationale for keeping these records for three decades stems from the possibility that certain health effects from toxic exposures may manifest many years after the exposure has occurred. By maintaining these records, employers provide a vital resource for former employees who may later encounter health issues related to their past occupation. This alignment with public health initiatives underlines the importance of ensuring individuals have access to information that can assist in diagnosing and managing long-term health risks associated with workplace exposures.

The other timeframes presented, such as 10 years, 20 years, or indefinite retention, do not align with OSHA's specified requirements and are therefore not correct in this context.