Work and Lifestyle Factors Influencing Job Satisfaction of Japanese Civil Servants: A 5-Year Longitudinal Study.

OBJECTIVE: Although work, family, and lifestyle factors were associated with job satisfaction, prospective studies are lacking. This longitudinal study clarified the predisposing factors for job satisfaction. METHODS: Datasets were obtained from the Japanese Civil Servants Study and included 1429 participants. We assessed the relationship between job satisfaction and specific work and lifestyle factors. Logistic regression analyses evaluated the association between deteriorating job satisfaction and poor work and lifestyle factors at baseline and changes in these factors at follow-up. RESULTS: Poor sleep quality and limited job control at baseline were associated with deterioration in job satisfaction. Furthermore, deterioration in job control and work-to-family conflict at follow-up was associated with job dissatisfaction. CONCLUSION: Work and lifestyle characteristics were associated with job dissatisfaction. Employees with limited job control and high work-to-family conflict at baseline were more likely to develop job dissatisfaction.

Association of Sleep, Work Environment, and Work-Life Balance With Work Performance: The Japanese Civil Servant Study.

OBJECTIVES: To explore differences in work performance based on the influence of sleep, work environment, and work-life balance. METHODS: The datasets for this study were obtained from the Japan Civil Servant Study, which included 3478 participants (2199 men and 1279 women). RESULTS: Belonging to the younger generation, high levels of support at work, fewer social contacts with friends, and a negative personality were independently associated with low work performance in both men and women. Poor sleep quality and job dissatisfaction were associated with low work performance in men but not in women. Work-to-family conflict was associated with work performance in women. CONCLUSION: Interventions that target not only the overall measure but also account for sex-specific characteristics are important for improving work performance.