This article presents the historical evolution of the main heath system in Argentina - The Social Works System (System de Obras Sociais - OS) focusing in the nineties, when were realized the main intents to reform this system. The article point out the difficulties on the health reforms implementation and the interest conflicts that emerged on the negotiation among government and trade unions who managed the system since its creation. The article also analyze the near future perspectives regarding the OS system.
Health reform; Social works; Social security; Argentina