 A ministerial order of January 1970 extended protection in cases of partial unemployment to home workers, while an ordinance of August 1970 fixed the conditions of health necessary for service in the merchant navy.A general provision of October 1970 determined in detail the circumstances in which the competent authority must take action on the basis of the act on the technical means of work.The requirement also stipulated the extent to which the technical standards established by national and international organisations can be regarded as "rules of the art".