The German Packaging Ordinance of 1991 marked one of the first attempts to introduce the concept of producer responsibility into environmental policy. The topic, thus, allows for useful insights into the factors which influence the outcomes of modern environmental governance. This paper uses the tool of policy network analysis to assess the outcomes, in addition to the environmental and economic efficiency, of the German packaging policy. It places special emphasis on the many links between actors, interests, policy design and their collective influence on policy outcomes. The research for this paper was based on a study of primary and secondary literature, interviews and workshops with involved decision-makers. The assessment of the policy outcomes gives an overview of the related costs and environmental effects, and demonstrates that announcement effects lead to reasonable reductions in packaging consumption. In conclusion, the experience of the German Packaging Ordinance shows that, within the field of producer responsibility policy, it is important to recognize the economic interests of all participating actors. In addition, it underlines the assumption that realistic legal frameworks and the threat of sanctions are indispensable for ensuring cooperation among the parties concerned.