Recent discussions on corporate citizenship (CC) highlight the new political role of corporations in society by arguing that corporations increasingly act as quasi-governmental actors and take on what hitherto had originally been governmental tasks. By examining political and sociological citizenship theories, the authors show that such a corporate engagement can be explained by a changing (self-)conception of corporate citizens from corporate bourgeois to corporate citoyen. As an intermediate actor in society, the corporate citoyen assumes co-responsibilities for social and civic affairs and actively collaborates with fellow citizens beyond governmental regulation. This change raises the question of how such corporate civic engagement can be aligned with public policy regulations and how corporate activities can be integrated into the democratic regime. To clarify the mode of CC contributions to society, the authors will apply the tenet of subsidiarity as a governing principle which allows for specifying corporations’ tasks as intermediate actors in society. By referring to the renewed European Union strategy for Corporate Social Responsibility, the authors show how such a subsidiary corporate-governmental task-sharing can be organized.