In order for an expert to maximally fulfill the needs of their users, with formal education, there is a need for lifelong learning and work on themselves. In view of the above, there is a unique method in response to the constant need for the development and improvement of experts, which is the supervision. Supervision is defined as a process of learning, development and support methods for skilled workers that enables them to acquire new knowledge, develop skills, adopt professional and personal knowledge through personal experience of professional work, in order to improve the quality of work with the users. Supervision is an important tool in assisting professions and a widely accepted method of psychosocial work. The aim of this paper is to provide insight into certain research and theoretical insights into the supervision in Croatia as an opportunity to expand legal and ethical frameworks.This paper describes the overview of the development of the supervision and its essential determinants (supervisory models, group supervision, first meeting, reflection, etc.). In the second part of the paper, an important emphasis is placed on the development and features of the supervision in Croatia. Concluding observations of the supervision in Croatia indicate that the supervision is accepted method of psychosocial development of experts, in whose development a major role have Social Work Studies Programme Faculty of Law, University of Zagreb. Still, there are many areas for improvement, greater affirmation of supervision in public, raising the awareness of experts in practice and encouraging further research.