The European Single Market is celebrating its 30th anniversary, but in practice the EU's promise of prosperity has turned into a hard-fought battle for the lowest standards, which is often fought on the backs of workers. How can we succeed in transforming the EU into a truly social union, effectively fighting wage and social dumping and guaranteeing fair labour mobility? Trade unionists from Slovenia and Austria and representatives of the European Trade Union Confederation, the European Commission and the European Parliament discussed this at an event organised by AK EUROPA and the Brussels office of the Austrian Trade Union Federation (ÖGB).