Background: Half of Japanese workers are physically inactive, but there are no studies on the relation between the leisure-time physical inactivity of Japanese workers and their socioeconomic status. The proportion of female workers who are physically inactive has been larger than that of male...

Personal lifestyle choices such as leisure-time physical activity are major determinants of both the health and happiness of individuals. However, price discrimination exists between municipalities at almost public sports facilities. An economic intervention to change the cost of using public...