Japanese Codes on Labor Union and Labor Adjustment 1984;
Labor Standards Law & Enforcement Ordinance Thereof 1993;
Labor Safety and Sanitation Law (Law No. 57, Jun. 8, 1972) (1981);
Workmen’s Accident Compensation Insurance Law (Law No. 50, Apr. 7, 1947) 1984;
Employment Insurance Law (Law No. 116, Dec. 28, 1974) 1983;
Health Insurance Law (Law No.70, Apr. 22, 1922) 1982;
Welfare Pension Insurance Law (Law No. 115, May 19, 1954) 1992
.