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Working hours and mental and physical fatigue in Japanese workers

Working hours and mental and physical fatigue in Japanese workers Background Establishing a threshold number of working hours is very important when making recommendations to protect people from the potentially harmful health effects caused by long working hours.Aim To clarify the influence of working hours on both mental and physical symptoms of fatigue and use the data obtained to determine permissible working hours.Methods Cross-sectional survey of male day-shift workers using the Self-Rating Depression Scale (SDS) and the Cumulative Fatigue Symptoms Index (CFSI). Working hours were subdivided into six groups and odds ratios were calculated for positive outcomes on the SDS and CFSI using logistic regression analysis.Results A total of 715 workers participated. In the group working 260279 h/month, the odds ratios for SDS and irritability, anxiety and chronic tiredness of the CFSI were significantly increased. In the group working 280 h/month, the odds ratios on CFSI for general fatigue, physical disorders, anxiety and chronic tiredness were likewise significantly increased.Conclusions The present results clarified that working hours should be <260 h/month in order to minimize fatigue symptoms in male day workers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Occupational Medicine Oxford University Press

Working hours and mental and physical fatigue in Japanese workers

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References (12)

Publisher
Oxford University Press
Copyright
The Author 2007. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
ISSN
0962-7480
eISSN
1471-8405
DOI
10.1093/occmed/kqm047
pmid
17686918
Publisher site
See Article on Publisher Site

Abstract

Background Establishing a threshold number of working hours is very important when making recommendations to protect people from the potentially harmful health effects caused by long working hours.Aim To clarify the influence of working hours on both mental and physical symptoms of fatigue and use the data obtained to determine permissible working hours.Methods Cross-sectional survey of male day-shift workers using the Self-Rating Depression Scale (SDS) and the Cumulative Fatigue Symptoms Index (CFSI). Working hours were subdivided into six groups and odds ratios were calculated for positive outcomes on the SDS and CFSI using logistic regression analysis.Results A total of 715 workers participated. In the group working 260279 h/month, the odds ratios for SDS and irritability, anxiety and chronic tiredness of the CFSI were significantly increased. In the group working 280 h/month, the odds ratios on CFSI for general fatigue, physical disorders, anxiety and chronic tiredness were likewise significantly increased.Conclusions The present results clarified that working hours should be <260 h/month in order to minimize fatigue symptoms in male day workers.

Journal

Occupational MedicineOxford University Press

Published: Aug 8, 2007

Keywords: Chronic fatigue epidemiological study long working hours mental health

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