The purpose of this dissertation is to describe: - the historical background of Greek shipping and its position in post-war Greek society - the official policy expressed by Greek social security service “NAT” – (Nautiko Apomahiko Tameio in Greek) - the educational establishments (Academies) - the Bureau of crew supply (GENE) - the role of the PNO (Greek maritime federal Union) and of the PEMEN (the federation of engineers) as well as the role and extent of their involvement in improving working conditions