The course is divided into two parts. The first is dealt with the study of norms that underpin the right of social security, even with regard to the increasing influence of European law and European social policies on national welfare. Legal profiles of social security are then analyzed, in order to clarify the complex structure and interweaving in it and publication of private law principles. The latest legal developments and trends that characterize the present will be discussed, with particular attention to the creation of the so-called second pillar and to the complementary and supplementary pension. In the second part, the issue of pensions (with particular regard to the most recent reforms) will be addressed. The issue of compulsory insurance against occupational accidents/occupational diseases and so-called social safety nets are then addressed, including both traditional forms of income support (wage supplementation, mobility allowances, unemployment benefits), both performance inspired by logic of workfare. Health and safety at work, social protection of family and the Safety National Service, will be the last area analyzed.