PurposeThe present paper describes the interplay between the “why” and “how” in co-production based on a case study of community-based healthcare in Denmark involving municipalities and voluntary sports clubs. So far, policy practice and research have focussed on the “why” – the rationales and pre-requisites – of co-production. However, there seems to be a lack of knowledge about the “how” of co-production in the interplay between professionals and volunteers. The paper asks how co-production is being perceived and practised according to existing norms and objectives of public healthcare and civil society, drawing on the theory of institutional logics.Design/methodology/approachThe paper uses a critical case study approach to examine the practice of co-production. The analysis builds on qualitative data from nine semi-structured interviews, two information interviews and project documents. Interviews were recorded, transcribed verbatim and coded.FindingsThis paper demonstrates that compatibility of institutional logics was not given, nor did the co-existence of potentially competing logics necessarily result in conflict in co-production. Instead, in this case study co-production emerged as highly contingent, reflecting the dynamic interaction between logics and context-specific management.Originality/valueThis paper makes an original contribution to the conceptual understanding of co-production in emphasising the benefit of paying attention to the network logic when building bridges between public healthcare and civil society – and to unite the seemingly contradictory “why” and “how” of co-production in practice.