The Boston Psychiatric Rehabilitation (BPR) approach is individualized and characterized by being based entirely on the individual's unique needs and preferences in the areas of working, learning, social contacts, and living environment. Relatives of clients in mental health services influence the client's possibilities for recovery by their everyday relationship. Relatives have, however, traditionally had a subordinated role in the care of their mentally ill family member. The perspective of relatives is an important aspect in the development of new approaches to psychiatric rehabilitation. The purpose of this study was thus to describe and explore relatives' experiences of the BPR approach. Ten relatives of clients in mental health services taking part in the BPR were interviewed. The interviews were transcribed and analyzed with a qualitative content analysis method to explore relatives' experiences of the BPR intervention in a county in Sweden. The findings from the interviews could be summarized in the theme "To meet the clients' needs" consisting of three categories: "Dependence on staffs' competence," "Responsibility for user involvement," and "The necessity for coordination between authorities and caregivers." The findings suggest that relatives may contribute with important information about clients' needs related to outcome of care. Relatives' perspectives may be of importance in future development of BPR. Further research about the relatives' role in psychiatric rehabilitation is needed as well as studies that compare different kinds of psychiatric rehabilitation from the perspective of relatives.