Through the analysis of the 20.281 Act, that modifies base salaries established the Labor Code, the authors criticize the way that, in this case, the Presidency used its exclusive legislative initiative for increasing private sector' salaries, infringing the right to freedom of contract established by the Constitution. In this sense, the paper propose, using a systematic constitutional interpretation method, reconciling this power with the right of freedom to work stipulated in article 19 No 16 of the Constitution, right that can not be considered as an isolated guarantee, but an essential component of the Economic Constitution established in the Constitution of 1980.