The purpose of this work is to determine the quality of work of the experts in the correctional institution with the families of juvenile with problem behaviour in residential treatments as well as the satisfaction of the quality of work and the personal engagement of the employees in their professional work. There was a need to acknowledge the importance of involving family members in interventions in order to return the juvenile from the residential treatment to a changed environment with the optimum way of functioning for their growth and development. The research was based on the processing of data obtained by completed questionnaires by professional employees working with juvenile delinquents in three correctional institutions in Croatia: Ivanec, Mali Lošinj and Bedekovčina. Univariant analysis of variance and discrimination analysis showed that parents get involved in the treatments regardless of the sex of the juvenile, proposed measure of the family legal protection or the location of the residential treatment. The disadvantage occurs in the mode of participation as it has been established that parents get mostly involved only by information about the juvenile and contacts with him while in other forms of professional work they do not participate and other professional interventions with them are often not implemented. In addition, it was established that the professional workers will be satisfied with the quality of work with the family in the institution if they are satisfied with their own engagement and professional work which implies the need for more frequent education and supervision in their work. They also express the need for better co-operation with other key employees involved in the process of residential treatment for juveniles with problems in behaviour, such as educators and social workers.