OBJECTIVE: To describe perceptions of physicians and home care professionals working in local community service centres (CLSCs) with respect to collaboration on home care follow up, and to identify conditions likely to help or hinder cooperation. DESIGN: Descriptive study using individual and group interviews. SETTING: Areas served by three CLSCs in the Quebec city region. PARTICIPANTS: Forty-five general practitioners with large home care practices and coordinators and representatives of CLSC home care teams. MAIN OUTCOME MEASURES: Perceptions of physicians and home care professionals with respect to interprofessional cooperation on and barriers to home care follow up. RESULTS: Most participants thought that cooperation would be beneficial to complex case management and continuity of follow-up care. In practice, however, cooperation is hindered by differences in medical practice and home care team service delivery and in methods of remuneration, and lack of knowledge of the other field of practice. CONCLUSION: All participants recognized the importance of cooperation. This study did not reveal any real integration of medical and CLSC home care services. Efforts must be made to identify the strategies most conducive to improving interprofessional cooperation.