he paper proposes a theoretical survey of health-care organization and funding systems, by underlining and discussing the combination public versus private provision and production of social assistance services. The survey then examines the present features of various National health services, focusing on the efficiency and equity of public intervention and on the industrial organization of the institutional design of health care. Hence, the paper treats the cost-benefit of vertical integration of structures, devoted respectively to purchasing and providing health-care services, it considers the effects of managed competition in quasi-markets and, finally, it deals with supplementary insurance systems.