The European Social Dialogue, and its output, the European collective agreements, are intended to implement minimum standards of working conditions that bind all Member-States, in a logic of legal harmonisation of the European Union’s social objectives. However, despite some federal traits of the European Union (“EU”), since the beginning European social dialogue has faced numerous challenges, particularly when confronted with the need to balance economic interests, giving social policies a subsidiary role, and when facing the different agendas of each Member-State. This article proceeds with a historical analysis of the development of European Social Dialogue, its implementation stages, and past and current challenges, which can be divided in three phases: past experience, present experience and current challenges and, finally, an attempt to project what new social policies might hold for the future.