The deep changes in Polish legal system and economy that took place after 1989 contributed to the emergence of new challenges for public administration. The legislator, in order to satisfy growing numbers of social demands, appointed new tasks and created a new legal form of action for public administration entities. However, not every of the new forms were fitted to classically understood administrative law. Part of this new forms at the same time combines some features characteristic for administrative law as well as typical for civil law, which gives them untypical (hybrid) character. As an example, there can be mentioned: civil law contracts with so called “overlays” (obligatory additional conditions) imposed by certain legal acts as well as administrative settlements and administrative contracts. The aim of this article is to analyze those hybrid forms of action of public administration entities in terms of implementation the objectives of regulation set by the legislator.