In today's society, there is an increasing need and demand for authorities to collaborate to achieve improved outcomes around social problems. The purpose of the study is to investigate how the social services view collaboration with the police in the case of juvenile delinquency, in a municipality located in southwestern Sweden. The approach of the study is qualitative method in the form of semi-structured interviews. After all interviews had been conducted, all material was transcribed and a thematic analysis was conducted to find codes and themes in order to analyze the content. The philosophical basis of the study is the hermeneutic approach. The respondents' answers have been interpreted with the help of previous studies, the stamping theory and collaboration theories. The results show success factors and obstacles in collaboration such as catching up in time and confidentiality. The conclusion of the study is that all respondents have a positive view of collaboration, despite obstacles. Furthermore, it is also concluded that crime prevention is an effect of collaboration despite the fact that social services do not apply direct crime prevention strategies in their work. The most important conclusion is that society has failed to catch the young people with norm- breaking behavior even earlier.