The census data and the vital statistics classified by the workers and their families in 1920, 1 930, 1940, 1960 and 1970 were used to consider the difference in mortality among the industrial societies in Japan . The distinct difference in the health status among the industrial societies was found to be in existence not only because of the risks related to the work but also because of the generally influential factors existing in the industrial societies towards the daily life of the workers and their families. For example, the mortality of both the workers and their families in "mining" was very high, the mortality in "agriculture" decreased after war in almost every cause of death except "suicide", and the healthy workers tended to be engaged in"manufacturing" and the tertiary industries. We have hereafter to make a greater effort to find the factors influencing the health status existing in the industrial societies in Japan and to improve it.
