Socioeconomic Status and Mental Illness in Japan*

Abstract

Abstract Since the pioneering work of Faris and Dunham (1938), a number of studies in the United States have documented an inverse association between socioeconomic status (SES) and mental illness both at the aggregate and the individual levels, and both for the treated and the general population. However, there are few studies of whether this relationship holds in other countries. This study examines socioeconomic characteristics and mental illness in Japan, which has a very different social stratification system from that of the United States. It was found that, at the aggregate level, the “inverse” association between socioeconomic characteristics and the rate of treated mental illness does not hold in Japan. Instead, the relationship is curvilinear: mental illness is higher in districts with large numbers of blue collar and upper white collar workers than in districts with large numbers of lower white collar workers. The effect of SES on mental illness operates through economic stress embedded in the macro social context. Because different social structures lead to different patterns of economic stress, the inverse relationship between socioeconomic status and mental health cannot be assumed to hold in all countries.