Administrative organizational law is in motion: Recent approaches to state and administrative reform pursue the fulfillment of public tasks through a division of labor between the state and society, partly involving the return of responsibility for previously state-provided public welfare tasks to society. To ensure the fulfillment of tasks even in such a pluralized state organization with its differentiated structures, it is necessary to align this network of public and private actors with public welfare-oriented goals and to provide accompanying administrative support for the realization of these goals. This work develops organizational and procedural structures for an administrative corporate law and a private organizational law, as well as an administrative cooperation law, in addition to traditional administrative organizational law.