This dissertation discusses inter-sectoral interactions in the formulation of policies by the federal government to support waste pickers occurring in the Inter-ministerial Committee for the Social and Economic Inclusion of Waste Pickers (CIISC) between 2008 and 2014. This analysis highlights the executive secretariat of this committee, as well as an important member: the Labor and Employment Ministry (MTE)that acted through its National Secretariat of Solidarity Economy (Senaes). In this respect, we made a historical reconstitution of CIISC from 2003 to 2015 based in documental analysis (legislation and government reports), in the related literature and in interviews with public managers made in the course of this research. Thus, this dissertation seeks comprehending influences and interactions between different federal agencies and entities that took part in CIISC, on federal public policies in support of waste pickers. In this regard, we analyzed both the coordination of this committee by its executive secretariat and its relations of collaboration, indifference and opposition that permeated its existence. We found that, in the midst of coordination and other interactions, the role of public managers was central, whose performance as bureaucratic activists was crucial for the inter-sectoral coordination in the formulation of policy to support waste pickers. It is then analyzed the different dimensions of this inter-sectoral articulations, as well as it is traced its limits in the formulations of federal policies of support to waste pickers. We found that exists some policies in support of waste pickers that, although relatively isolated, were internally formulated, financed and executed in an articulated manner, such that, despite not being capable of being described as a system, it is inadequate of being treated as punctual in spite of it frailties.