An individual is considered fit for duty when they are:

An individual is considered fit for duty when they are not impaired mentally or physically for safe job performance. This means that the individual can perform their job responsibilities effectively without any conditions that would hinder their ability to operate safely or competently. This definition emphasizes the importance of mental and physical readiness in the workplace, acknowledging that even if a person has some health issues, as long as those do not impair their work performance, they may still be deemed fit for duty.

In contrast, being free from all illnesses is not a practical standard for fitness for duty, as many people can manage chronic conditions while still performing their jobs safely. The presence of prescription medication does not automatically imply impairment; it depends on the medication and its effects on the individual. Regular exercise is beneficial for overall health but does not directly equate to being fit for duty, as fitness is primarily about the immediate capability to perform job tasks safely.