Parameters of the Judiciary's performance in public policies

This work has as a reason to verify how the Judiciary Power works in public policies, in light of the doctrine and jurisprudence that deals with the issue. It is pointed out that, as a rule, the definition and implementation of public policies rests with the executive branch, which has a margin of discretion in decision-making, and approves the budget to the legislature. On the other hand, it is pointed out that the classical theory of the separation of powers is not enough, on its own, to exclude the Judiciary Power from public policies, but the performance of this power should not be the rule, but an exception, besides need to observe the reserve of the possible.