title: [Analysis of relationship between shift-work and occupational stress among workers from different companies].
abstract: OBJECTIVE
  To investigate the relationship between work in shifts and occupational stress.
  
  
  METHODS
  A total of 5338 employees from 13 companies were investigated by cluster sampling, and occupational stress measuring tools, job content questionnaire, and effort-reward imbalance questionnaire were used to investigate occupational stress factors, stress reaction, and the condition of work in shifts.
  
  
  RESULTS
  The employees who worked in shifts accounted for 46.6%. The condition of work in shifts varied significantly across different companies, employees with different individual features (including sex, job title, degree of education, age, working years, smoking, and drinking), and employees with different weekly working times(P<0.01 or P<0.05); health status was associated with work in shifts(P<0.01); compared with the employees who did not work in shifts, those who worked in shifts had significantly lower scores of technology utilization, work control level, psychological need, reward, social support, and job satisfaction(P<0.01 or P<0.05), as well as significantly higher scores of physical demands, effort, depressive symptoms, and negative affectivity(P<0.01).
  
  
  CONCLUSIONS
  Work in shifts can affect health status, and is associated with occupational stress.
authors.affiliation: Henan Provincial Institute for Occupational Health, Zhengzhou 450052, China.
authors.forename: Guizhen
authors.initials: G
authors.lastname: Gu
authors.forename: Shanfa
authors.initials: S
authors.lastname: Yu
authors.forename: Wenhui
authors.initials: W
authors.lastname: Zhou
authors.forename: Hui
authors.initials: H
authors.lastname: Wu
mesh_terms: D003863:Depression; D006304:Health Status; D006801:Humans; D007588:Job Satisfaction; D009784:Occupational Diseases / Q000453:epidemiology*; D012907:Smoking; D012944:Social Support; D013315:Stress, Psychological; D011795:Surveys and Questionnaires; D014940:Work Schedule Tolerance