The course aims to provide students with the knowledge of the constitutive elements of the Social Service as a discipline as well as the fundamental theoretical and ethical principles for framing the professional figure of the social worker. Through historical exploration, the various stages of the birth, development and consolidation of the profession will be retraced within the most relevant processes of social transformation. The learning of value principles in an evolutionary dimension will boost the critical understanding of the nature, origins and development of the profession, contextualized within the welfare system in a trifocal perspective, also with respect to institutional, social and professional mandates. The course will serve to provide knowledge and acquire professional skills and abilities necessary to promote and encourage pluralistic and flexible basic training for the exercise of the profession. The use of theory applied to praxis in the action of the social worker in the various professional fields, the understanding of social phenomena within a plural community also from an ethnic and cultural point of view and the use of a multidisciplinary approach will be favored. and reflective critic in the implementation of social service interventions.