ABSTRACT

Shift work is done by two or more groups of workers who alternate their work shifts assigned at different times of a given day A shift refers to hours of the day in which a worker or a group of workers is scheduled to be in the workplace. This enables the undertaking to operate longer than the usual period of a work day, extending the business to night or early morning hours. The total period of time covered by the shifts can be either continuous for 24 hours, or discontinuous for less than 24 hours a day.