This research paper addresses various theories about social in- and exclusion. On the one hand, these theories are communicated through personal experiences of courses in and of homelessness. On the other hand, they are manifested in the consequential outcomes for the social work profession. Even though there are an abundance of people who are homeless and affected by the resulting experiences, little research has been conducted on the issue. The goals of undertaking Social Work are to prevent homelessness and offer professional assistance on all levels concerned. In the empirical part of the paper, we present four qualitative interviews with former clients of the Suchthilfe Wien gGmbH which we conducted and evaluated ourselves. The results demonstrate how complex the living situations of the interviewees are, how stigmatization and the people’s health interrelate with their social embeddedness, how their living situation is influenced by these factors, and how support from social workers affects this entire process. Finally, we sketched a project proposal which aims at counteracting stigmatization of homeless people with addictive disorders.