Moral harassment at workplace is an ever present social issue in the new world of globalized labor, and manifests itself in brazilian and north american contemporary societies, among others. The so called labor world is a privileged locus to ponder the values each society elects, aspires, propagates and prioritizes. In this line of thought, the present research investigates why the relational behavior in the labor worlds of Brazil and the United States has led to an escalating in moral harassment cases, with subsequent rise in judicial demands of compensation for damages caused by this form of violence. The thesis investigates the reasons that lead a worker to morally bully a subordinate or colleague, violating minimal rules of moral human values, in a world (at least theoretically) conscious of human rights and the rejection of any form of discrimination, whether religious, sexual, ethnic, political or ideological. The question on which the reflection is made, therefore, is what is leading to the growing deterioration of interpersonal relations in the brazilian and north-american labor worlds.