The effects of extended workdays on fatigue, health, performance and satisfaction in nursing

The 9-hour shift seemed to combine the negative aspects of the 12-hour shift with the negative aspects of the 8-hour shift. It is suggested that the 9-hour shift had more negative effects than the 12-hour shift because: (1) nurses could not choose what shift length they worked; (2) many worked part-time; and (3) they already had many days off. It is also suggested that increases in workload since the 1980s make current extended shifts in nursing more fatiguing.