The intention of this study was to examine the interaction between authorities. More specifically it had a purpose to look at the ongoing cooperation between social workers and staff of special homes of closed institutional youth care. The sanction system for young offenders? reform of 1999 where young people between the ages of 15-17 who have committed serious crimes, can be sentenced to secure institutional treatment instead of prison, aims to counteract the harm which can result from a stay in prison. The social welfare board in the young person´s local authority and the national board of institutional care shall cooperate during the youth?s placement at the special home of closed institutional youth care.