In this paper a new organizational solution with original content in penal system will be presented. The new system is called probation. In the begginning of this paper, the term probation will be defined and also its development in the world and in Croatia. Furthermore, the main segments of the legal document that regulates this area, Law on probation, will be explained. Also, the cooperation between the probation system, social care system and the police will be considered in this paper as will the cooperational major segments, ie. the positive effects which positively influence the growth of further multidisciplinar cooperation. Next, this paper is also focused on showing the aspects of work with addicts in probation, as they often commit crimes and also probation for juvenile offenders. The main goal of this paper is to give some insight in the development of this novelty and in all circumstances which led up to creating the idea of preventing crime with simultaneously reducing institunalization and criminal recidive. Considering that this system is fairly young, there is a lot of space for improvements which this paper presents through its last topic and that is the pilot project of electronic supervision which has shown to be quite succesful