The Definition of Shift Work Fatigue

Definition of Shift Work Fatigue

A state of physical and cognitive impairment caused by disrupted circadian rhythms and insufficient recovery time, common among workers on rotating shifts, night shifts, or extended hours. It can impair reaction time, judgment, and attention, increasing the risk of errors and incidents.

Example of Shift Work Fatigue

A truck driver on a rotating night-shift schedule reports difficulty staying alert during early-morning drives, prompting the company to review its scheduling practices and mandatory rest periods.

Frequently Asked Questions: Shift Work Fatigue

Which industries are most affected by shift work fatigue?

‍Industries with round-the-clock operations — such as healthcare, transportation, manufacturing, and emergency services — commonly report higher rates of shift work fatigue among employees.

How do employers manage shift work fatigue risk?

‍Common strategies include limiting consecutive night shifts, ensuring adequate rest periods between shifts, providing fatigue-recognition training, and, in regulated industries like trucking, enforcing hours-of-service limits.

Can shift work fatigue be considered a workplace hazard?

‍Yes, many safety programs now formally recognize fatigue as a hazard, since it can impair judgment and reaction time similarly to other risk factors like substance impairment.