Objectives: This study investigated the characteristics of the age-job satisfaction relationship for public school teachers. Past studies examining this relationship have found both linear and non-linear relationships. However, such studies have yet to examine these relationships by comparing job satisfaction of teachers with that of company employees in the same cultural context. In order to investigate the characteristics of Japanese teachers’ working environment, we examined how different the age-job satisfaction relationships were between teachers and company employees. Methods: We conducted hierarchical polynomial regression analyses with four job satisfaction variables to compare the age-job satisfaction relationships of Japanese public elementary, junior and high school teachers with Japanese professional and technical workers who belonged to their respective labor unions. Results: 1) Among teachers, the effects of age on overall job satisfaction and satisfaction with pay were significantly negative, and the effects of age on satisfaction with human relationships and working hours were not significant. 2) Among company employees, these four kinds of satisfactions had U shaped relationships with age. 3) Compared to company employees, teachers showed higher intrinsic satisfaction and lower extrinsic satisfaction. Conclusions: The age-job satisfaction relationship for teachers decreases with age. This result may be explained by the excessive workload of Japanese teachers, a characteristic of their working environment. Elderly teachers’ burnout may be related to this characteristic. It may be necessary for elderly teachers to be supported in order to enhance their job satisfaction, especially extrinsic satisfaction.

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