This article explores how and why Swedish-based civil society organizations (CSOs) in the welfare area engage with the European Union (EU). Europeanization is understood as a twosided process in which the EU influences national actors while national actors are engaged in usage of the EU. The data collection was conducted through a systematic study of the websites of organizations that participated in the Swedish Compact, and through subsequent e-mail interviews with representatives from 56 of those same organizations. The assumption was that organizations with a privileged position vis-à-vis the Swedish government would be affected by EU influences. The results show that these Swedish CSOs indeed signalled Europeanization in terms of attention to the EU, cooperation, 'projectification', professionalization, and transformation of organizational identities and interests. The EU engagement was analysed in relation to organizational origin and the historical development of the Swedish welfare state, and the conclusion is that the national sociopolitical context influences the scope and strategies of EU engagement.