: As the result of our investigation of comparing "on-the-job" accidents with "off-the-job" accidents occurred in the period of Jan. 1st - March 31st, 1962 in 133 plants from various industries in Japan each of which employed more than 100 workers, the following findings were obtained : In total, 406,464 workers were involved in this investigation.
  1. In this comparison, "off-the-job" accidents proved to be larger in number than "on-the-job" accidents" by more than 50 %.
  2. When "off-the-job" accidents per 1,000 workers per year were put in order of magnitude, the rubber product industry held the first rank, being followed by the paper pulp industry, the iron and steel industry and the transporting machine industry in succession.
  3. When the ratio of "on-the-job" accidents to "off-the-job" accidents in each factory was investigated, the factories which showed less "on-the-job" accidents than "off-the-job" accidents amounted only to 37.6 %, while those in which the number of "off-the-job" accidents was more than 10 times of "on-the-job" accidents reached to as much as 12 %.
  4. An analysis of "off-the-job" accidents by kind showed that traffic accidents were 30%, burns 4.13%, and so on.
    As to accidents due to other causes which occupied 58.8 %, it was astonishing to find that accidents due to sports were abnormally numerous among this category.