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Related Experiment Videos

Relationship between self-reported low productivity and overtime working.

Takashi Shimizu1, Seichi Horie, Shoji Nagata

  • 1Department of Mental Health, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Fukuoka, Japan. t-shimiz@nifty.com

Occupational Medicine (Oxford, England)
|February 14, 2004
PubMed
Summary

Overtime work is linked to reduced productivity due to poor health, with cold symptoms and sleep loss as common causes. Changes in overtime hours also correlated with increased sick leave.

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Area of Science:

  • Occupational Health
  • Industrial Psychology

Background:

  • Overtime working is prevalent in many industries.
  • Poor health can significantly impact worker productivity.

Purpose of the Study:

  • To examine the association between overtime hours and self-reported low productivity due to health issues.
  • To explore the relationship between overtime, sickness absence, and productivity over one year.

Main Methods:

  • A longitudinal study involving 94 workers at a Japanese manufacturing company.
  • Monthly self-report questionnaires on sickness absence and low productivity.
  • Overtime hours data collected from company records for a subset of employees.

Main Results:

  • Low productivity was strongly associated with overtime worked.

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  • Cold-like symptoms and sleep loss were frequently cited as reasons for low productivity.
  • Sick leave increased during periods of fluctuating overtime hours.

    • Conclusions:

    • Findings suggest a potential link between overtime working and decreased self-reported productivity.
    • Managing overtime and its impact on employee health is crucial for maintaining productivity.