The premise of this article revolves around considering whether the procedures for choosing future public administration collaborators should be the result of plural and open process. That is, through the market. This is so that the greatest number of offers can be presented, and that it is precisely this openness that results in the indeterminacy of the number of participants that will make each one of them strive to present the best offer. Therefore, based on the incorporation of some precepts of Law & Economics, this article aims to defend a position that is understood as socially efficient.