Purpose Understanding and treating musculoskeletal disorders (MSDs) requires coordination between the numerous healthcare professionals involved, including occupational physicians (OPs), general practitioners (GPs) and social insurance physicians (SIPs). The main objective of this study was to assess communication between OPs, GPs and SIPs in the management of MSDs. Methods This is a qualitative study in the form of semi-structured interviews with OPs in the French region of Brittany. The interviews were conducted until data saturation was achieved. The interviews were fully coded and analysed thematically using NVivo® software. Results The interviews were carried out among 17 OPs from companies and external occupational healthcare services who treated employees from various activity sectors. Different communication channels were used depending on the interlocutor, though they were mainly contacted by mail or phone. Most of the communication passed through the patient, either verbally or in writing. No major failure was detected in communication between the various types of practitioners, but instances of communication were influenced by various factors such as differences in perception, representation and objectives, as well as by how well the physicians knew each other. A number of instances of non-communication were found. Conclusion This study showed that patients play a key role in the interactions between different practitioners. It also revealed that different types of professional relationships depend on the objectives of the various interlocutors, which in turn vary according to their roles and competences.