Social workers from low-threshold institutions of Viennese homeless support services are reporting on steadily growing number of homeless EU Citizens visiting their institutions. However, they are largely denied access to professional support services provided by Viennese homeless support, since they have no entitlement to social security benefits or social assistance benefits. In particular their accommodation options can be described as problematic. Since the City of Vienna provides emergency shelters for non-eligible homeless EU citizens only in winter, they are instructed to live rough in public spaces in the summer. Although this fact has been considered in the previous literature, it has remained largely unclear. This master's thesis presents the results of an exploratory, qualitative study on the needs of non-eligible homeless EU Citizens based on experts views, as well as the capabilities and boundarise of social workers regarding the implementation of a year-round housing for this target group. To answer the research questions, a total of eight expert interviews were conducted with social workers of the Viennese homeless support sevices. The results show that the need for housing is fundamental to meeting the further basic needs of non-eligible homeless EU citizens. Among the social workers surveyed, there is consensus that there is an urgent need for year-round expansion of accommodation options in order to enable work objectives such as long-term stabilization of client health and (re-)integration into the regular labor market or re-housing them in „normal“ accommodation. The bounderies of social workers in terms of expanding supply can be determined by structural factors. These include, in particular, the nation-state migration policy, its effects at the level of the City of Vienna and the current funding policy of the Social Welfare Fund (Fonds Soziales Wien). In order to counteract the structural exclusion of homeless EU citizens, to promote their inclusion in professional support of Vienese homeless support services and to influence political decisions, interventions by professional social workers are urgently required. Three possible forms of Intervention are lobbying, awareness-rising and political activism aiming to highlight the shortages in care and work towards change.