The administration of justice by the Judicial Branch begins with the Magistrates' Courts, which constitute the first level within the hierarchical organization of this branch of government. They are followed, in ascending order, by the Specialized Courts, Superior Chambers and Supreme Chambers, which assume a series of competencies assigned to them by the national legal system. In this article we will address the competence by subject matter of the Labor Magistrates Courts, with emphasis on the expansion of their competencies, reviewing the changes produced in the 02 Labor Procedural Laws of Peru and the introduction of competencies made by the IX Supreme Labor Plenary of the year 2022.Although the Law is an important normative instrument in national law, nowadays jurisprudence has gained great importance within the sources of law, assuming a creative role, thus overcoming the traditiona...