In order to evaluate the relationship between job stress and mental health, a cross-sectional study was conducted using a questionnaire relating to demographics, subjective job stress and mental health state, The questionnaire consisted of a 30-item Japanese version of the General Health Questionnaire (GHQ) developed by Goldberg in addition to questions about subjective Job stress, to measure mental health and job stress conditions, respectively, All subjects were employees of an electronic company in Japan, Among 782 workers, 763 workers responded to the questionnaire satisfactorily (response rate was 97.6%), People whose GHQ score was more than 7 were classified as having psychiatric problems, while the remaining respondents were considered as having no mental health problems, We employed a multiple logistic regression analysis to estimate the relationship between subjective job stress and mental health, adjusting for gender, age, marital state, familial stress, and physical health state, Subjective job stress was significantly associated with the state of mental health, In particular, the items of ''too much trouble at work,'' ''too much responsibility,'' ''are not allowed to make mistakes,'' ''poor relationship with superiors,'' and ''cannot keep up with technology'' were significantly related to mental health.