ISSN 1225-8709 (Print)
ISSN 2005-7571 (Online)
Volume 24, Number 2 (2/2017)
Review Article <page. 59-67 >

Deleterious Effects of Shift Work in the Realm of Cognitive and Behavioral Domains : A Critical Review

Suji L. Lee, PharmD1,2;Chang-hyun Park, PhD2;Eunji Ha, BSE1,2;Shinwon Park, MA1,2;Haejin Hong, BS1,2;Su Hyun Park1,2;Jiyoung Ma, MS2,3;Ilhyang Kang, MS,1,2;Hahn Kang2;William Byunghoon Song2;Jungyoon Kim, MD1,2; and Jieun E. Kim, MD1,2;

1;Department of Brain and Cognitive Sciences, Scranton College, Division of Convergence, Ewha Womans University, Seoul, 2;Ewha Brain Institute, Ewha Womans University, Seoul, Korea3Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Korea

Shift workers experience a disruption in the circadian sleep-wake rhythm, which brings upon adverse health effects such as fatigue, insomnia and decreased sleep quality. Moreover, shift work has deleterious effects on both work productivity and safety. In this review, we present a brief overview of the current literature on the consequences of shift work, especially focusing on attention-associated cognitive decline and related behavioral changes. We searched two electronic databases, PubMed and RISS, using key search terms related to cognitive domains, deleterious effects, and shift work. Twenty studies were eligible for the final review. The consequences of shift work can be classified into the following three categories extracted from the literature review : 1) work accidents ; 2) commuting accidents such as car accidents that occur on the way to and from work ; and 3) attendance management at work (i.e., absenteeism, tardiness, and unscheduled early departure). These cognitive and behavioral consequences of shift work were also found to be associated with sleep disorders in shift workers. Thus, improvements in the shift work system are necessary in order to enhance workers' health conditions, work productivity, and safety.


Key words : Shift work;Cognition;Behavior;Deleterious effects;Medical personnel.

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