Under what circumstances is it necessary to review and update exposure control plans?

The correct answer involves reviewing and updating exposure control plans specifically when job tasks change or new risks are identified. This is crucial because exposure control plans are designed to minimize the risk of occupational exposure to bloodborne pathogens. When job tasks are modified or when new work processes introduce new risks, it is necessary to reassess the potential hazards and implement appropriate protective measures.

This ensures that the control measures remain relevant and effective in protecting employees from exposure. Regular updates allow the organization to adapt its practices to current conditions and technologies, ensuring compliance with regulations and maintaining a safe work environment.

In contrast, other options do not adequately address the need for proactive safety measures. For example, limiting reviews to every five years disregards the need for continuous assessment in dynamic work environments. Similarly, only reviewing plans when new employees are hired or solely after an incident fails to capture the ongoing responsibility employers have to maintain a safe workplace as roles and tasks evolve.