Social security systems differ not only in size, hut also in form. These forms have often been more controversial than the size of social expenditure. Different social forces have different conceptions of social security. Here is looked into the post-World War II settlements with regard to social security in Austria, Belgium, Britain, France, Germany, and the Netherlands, with a further glance at Denmark, Italy, Norway and Sweden. It is argued, that the labour movement had a particular vision of social security, which was carried through where the labour had the political majority and was defeated where it was a minority. Postwar developments derive form this settlement, which is more visible in the current crisis than in the 1960s - early 1970s period of expansion.