in: Oxford Research Encyclopedia of Politics
Solidarity is one of most contentious and contested concepts in European Union (EU) politics. At the same time, it was, and remains, a central value of European integration that has been more and more institutionalized over time. The numerous codifications in the EU treaties and the Charter of Fundamental Rights, along with the increasingly frequent references to the value in political declarations and decisions, prove the value's growing significance.Yet, there also exists a fundamental divide between rhetorical commitments to solidarity and the practice of the EU and its member states. The most recent crises of the EU have shown the instrumentality and strategic use of the concept in order to promote particular political positions rather than work toward a more common understanding of European solidarity.This makes the application of solidarity in the EU a question not just of arriving at definitional clarity, but also of developing practices that reflect solidarity in concrete cases. Such practices are inextricably linked with three grounds for action: voluntariness, selflessness, and identification.Despite, or precisely because of, these difficulties in defining, concertizing, and implementing solidarity as a European value, there is a rising interest in solidarity in various fields of studies, such as political science, sociology, philosophy, law, and history, making it an interdisciplinary and multidimensional subject matter.