Heinz Kleger, Thomas Mehlhausen

• The term solidarity is lacking a precise definition despite being embedded as primary law in the EU treaties and regardless of its pivotal role in the current debate on the euro crisis. Once the semantic core is unearthed we sketch three dimensions of European solidarity (motives, references, level of action). Through this we shall distil three ideal types of an intergovernmental European solidarity: a federal, an organic and a distributive type. Empirically we assign the most relevant measures, which were discussed and partially enacted in the course of the euro crisis, to the three ideal types where we identify an increasing tendency towards a distributive solidarity. Once the first elements will be upgraded to a full-blown distributive solidarity through further integration, several risks arise from a normative perspective.