Objective: Shiftwork has become a regular mode of working in the high-tech industry, which might lead to the acculmulation of stress and in turn lead to various physical and meatal illnesses. In recent years, there were many reports on the work stress caused by shiftwork, but few were from Taiwan. The aim of this study is to evaluate whether shift workers have higher levels of work stress than non-shift workers, so as to direct prevention strategies. Methods: We conducted this study in conjuection with the annual health check-up of a company located in the Tainan Technology Indtutrail Park from July 1 to September 30, 2005. On each participant, data on the demographic characterstics, past medical history, and health related behaviours were collected through a questionnaire. The job stress was evaluated by the Chinese edition of Job Content Questionnaire (JCQ) so as to evaluate the associations between shiftwork and job stress. Results: There were 257 male workers agreed to participate in this study. A negative association with shiftwork was observed for job control (JC), physical demand (PD), and job strain (JS) (p <0.05) in the JCQ. In the uni-variate analyse, shiftwork was associated with an odds ratio (OR) of 0.42 (95% confidence interval [CI]=0.23-0.75) for JC, an OR of 0.44 (95%CI=0.27-0.73) for PD, and an OR of 0.44 (95%CI=027-0.73) for JS. Higher education levels (OR=5.83, 95%CI=1.23-2763) and marriage (OR=2.06, 95%CI=1.17-3.65) were positive predictors of work stress. After adjusting other factors using multi-variate logistic regressions, we found shiftwork was an independent significant predictors of the JC (adjusted odds ratio [AOR]=0.41, 95%CI=0.19-0.86). Working in clean rooms (AOR=3.18, 95%CI=1.34-7.58) and higher education levels (university AOR=3.42, 95%CI=1.26-9.23; graduated school AOR=12.96, 95%CI=2.34-71.85) were independent predictors of work stress. Other factors such as shiftwork, amoking, and drinking did not have significant associations with work stress. Conclusion: Shiftwork was an independent significant predictor of JC. Workers working in clean rooms and with higher education levels had more work stress. The accommodation of shiftwork and life is an important issue in occupational health management.
Objective: Shiftwork has become a regular mode of working in the high-tech industry, which might lead to the acculmulation of stress and in turn lead to various physical and meatal illnesses. In recent years, there were many reports on the work stress caused by shiftwork, but few were from Taiwan. The aim of this study is to evaluate whether shift workers have higher levels of work stress than non-shift workers, so as to direct prevention strategies. Methods: We conducted this study in conjuection with the annual health check-up of a company located in the Tainan Technology Indtutrail Park from July 1 to September 30, 2005. On each participant, data on the demographic characterstics, past medical history, and health related behaviours were collected through a questionnaire. The job stress was evaluated by the Chinese edition of Job Content Questionnaire (JCQ) so as to evaluate the associations between shiftwork and job stress. Results: There were 257 male workers agreed to participate in this study. A negative association with shiftwork was observed for job control (JC), physical demand (PD), and job strain (JS) (p <0.05) in the JCQ. In the uni-variate analyse, shiftwork was associated with an odds ratio (OR) of 0.42 (95% confidence interval [CI]=0.23-0.75) for JC, an OR of 0.44 (95%CI=0.27-0.73) for PD, and an OR of 0.44 (95%CI=027-0.73) for JS. Higher education levels (OR=5.83, 95%CI=1.23-2763) and marriage (OR=2.06, 95%CI=1.17-3.65) were positive predictors of work stress. After adjusting other factors using multi-variate logistic regressions, we found shiftwork was an independent significant predictors of the JC (adjusted odds ratio [AOR]=0.41, 95%CI=0.19-0.86). Working in clean rooms (AOR=3.18, 95%CI=1.34-7.58) and higher education levels (university AOR=3.42, 95%CI=1.26-9.23; graduated school AOR=12.96, 95%CI=2.34-71.85) were independent predictors of work stress. Other factors such as shiftwork, amoking, and drinking did not have significant associations with work stress. Conclusion: Shiftwork was an independent significant predictor of JC. Workers working in clean rooms and with higher education levels had more work stress. The accommodation of shiftwork and life is an important issue in occupational health management.