ABSTRACT This paper examines how the renewed critical emphasis on reflexive professionalisation in the field of social work can take into account the challenges regarding the politics of democratic participation of service users as citizens while working towards social justice. Our contribution is based on the findings of a collaborative European research project involving researchers, students, public service organisations, service user organisations, and educators from various European countries. The aim of the project was to gain a differentiated and in-depth understanding of how reflexive professionalisation in social work may function as a concept and practice that stimulates social care that integrates a commitment to democratic citizen participation. Based on a qualitative content analysis of 21 transnational empirical case studies, we identify four vital dimensions of developing reflexive and democratic participatory approaches in social service contexts: (1) cultivating a historical awareness of how the professional identity and mandate of social workers has been and is currently (nationally) defined; (2) articulating the professional positions and normative value orientations that underpin (participatory) practice development; (3) reflecting on the constructions of problems, service user identities and related actions; and (4) creating space for ambiguity, risks and mistakes.