The principle of protection of workers in the Chilean constitution

In this paper be studied the classical principle matrix of labor law, the principle of protection and its expression in the Chilean constitution. Its study will be approached from a doctrinal and comparison of experiences perspective, in particular its manifestation through the rule in dubio pro operario, to then analyze the national doctrine, both labor and constitutional, as well as constitutional jurisprudence that has reaffirmed its full efectiveness in our country. Then we will refer to its consequences, from both a constitutional and labor perspective, especially with regard to interpretive, integrative and informative functions of the principle of protection in the Chilean legal system.