This research analyzes the effectiveness of Colombian justice in the materialization of the contractual labor liability of diplomatic agents or diplomatic missions on their workers linked through an employment contract or contractual link. It addresses the issue of the effectiveness of Colombian justice in terms of whether or not there is labour liability on the part of diplomatic agents over their workers, analyzing in the first place the conceptualization of diplomatic immunity and the international treaties that deal with labour contract law in diplomatic missions; Likewise, to know the basic notions about the labor contract and how this can give competence to a labor judge to know possible controversies regarding such agents or diplomatic missions, closing with the comparison and analysis of the precedent of the high courts and how these have materialized the labor liability of the agents and diplomatic missions to the Colombian legal system.