The 4hr work week pdf

The practice typically sees the day divided into shifts, set periods the 4hr work week pdf time during which different groups of workers perform their duties. The term “shift work” includes both long-term night shifts and work schedules in which employees change or rotate shifts. Shift work can also contribute to strain in marital, family, and personal relationships.

File:Your Brain Health and the Workplace. Shift work increases the risk for the development of many disorders. Shift work is considered essential for the diagnosis. People working rotating shifts are more vulnerable than others. This may be due to alterations in circadian rhythm: melatonin, a known tumor suppressor, is generally produced at night and late shifts may disrupt its production.

Shift work may also increase the risk of other types of cancer. Different shift schedules will have different impacts on the health of a shift worker. The way the shift pattern is designed affects how shift workers sleep, eat and take holidays. Some shift patterns can exacerbate fatigue by limiting rest, increasing stress, overworking staff or disrupting their time off. Other studies have showed a link between fatigue and workplace injuries and accidents. Workers with sleep deprivation are far more likely to be injured or involved in an accident. There are four major determinants of cognitive performance and alertness in healthy shift-workers.

Sleep during the day is shorter and less consolidated than night-time sleep. Before a night shift, workers generally sleep less than before a day shift. The relative effects of sleep inertia vs. Acute sleep deprivation occurs during long shifts with no breaks, as well as during night shifts when the worker sleeps in the morning and is awake during the afternoon, prior to the work shift. A night shift worker with poor daytime sleep may be awake for more than 18 hours by the end of his shift. 19 hours of wakefulness corresponding to a BAC of 0. 24 hours of wakefulness corresponding to a BAC of 0.

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