Process and Action in Work with Groups: The Preconditions for Treatment and Growth focuses on the development and dynamics of the work group method, taking into consideration worker-client relationships, interchanges between clients, and the role of social workers in the processes of support and control of the work group method. The book first offers information on the use of the group process, as well as resources and problems common to all social work methods and group process in social work. The manuscript then reviews the social worker's role in the group work process and the proposed model of the social group work process. The functions prior to first meeting and following group formation and elaboration of the proposed model are presented. The text elaborates on the uses of action and case studies on group work with elderly clients and young people at risk. Considerations include agency and its setting, contents of meeting, formation of the groups, and diversity of group members. The manuscript is a valuable reference for readers interested in the development and dynamics of the work group method.