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The Impact of Shift Length in Policing on Performance, Health, Quality of Life, Sleep, Fatigue, and Extra-duty Employment

其他書名	A Final Report Submitted to the National Institute of Justice
出版	Police Foundation, 2011
URL	http://books.google.com.hk/books?id=yMqRnQEACAAJ&hl=&source=gbs_api

註釋The results revealed no significant differences between the three shift lengths on work performance, health, or work-family conflict. There were, however, important differences where the other outcomes were concerned. Officers working 10-hour shifts, for example, averaged significantly more sleep and reported experiencing a better quality of work life than did their peers working 8-hour shifts. And officers working 12-hour shifts experienced greater levels of sleepiness (subjective measure of fatigue) and lower levels of alertness at work than those assigned to 8-hour shifts. The results suggest that CWWs are not likely to pose significant health risks or result in worsened performance, and that 10-hour shifts may offer certain benefits not associated with 8-hour shifts, whereas 12-hour shifts may have some disadvantages over 8-hour shifts. Importantly, those on 8-hour shifts averaged significantly less sleep per 24-hour period 10-hour shift may be a viable alternative to the traditional 8-hour shift in larger agencies; however, caution is advised when considering 12-hour shifts due to increased levels of self-individuals tend to underestimate their levels of fatigue, so officers may be more fatigued than they reported while working 12-hour shifts. Additionally, past research has shown increased risk for accidents with increasing numbers of hours worked. It is for these reasons that caution should be exercised when agency leaders consider adopting 12-hour shifts. Finally, the reduced levels of overtime usage for those working 10- and 12-hour shifts suggests the possibility for cost savings for agencies employing compressed schendules. These findings are consistent with many past findings; however, the lack of randomized controlled trials has limited the utility of past studies.