The United Nations Agenda 2030 has recognized that Social Economy (SE) entities play an important role in achieving the Sustainable Development Goals (SDG). In order to maximize the impact of the SE, governments have recently deployed new policies regarding these entities. The objective is to understand the context of policy change that has allowed these policies to emerge, their main characteristics and the critical factors in their construction and implementation. Successful policy cases in Europe and Spain have been studied. Qualitative data have been collected through key policy documents, experts, and focus groups. As a main finding, the study shows that this new model of policies exhibits the following features: it focuses on transformative change, follows the public-community partnership governance approach and the mainstream approach in the sense of a broader policy context, and finally, it is innovative in terms of means and of complex systematization of strategies. Difficulties in the implementation of the partnership approach, in the deployment of the policy-mainstreaming approach, and in the acceptance of the SE framed by all policymakers, SE representatives, and government staff, and constraints in financial endowment are the main critical factors in the implementation of these policies.