The purpose of this article is to attempt to philosophically explain the issue of vocation based on the two post-synodal exhortations Pastores dabo vobis and Christus vivit. The issues of vocation are discussed on the basis of: concept, types, structure and discernment of vocation. From a philosophical point of view, vocation has the status of an interpersonal relationship. Its existence is made possible by two correlates, which are God and man. Vocation as a real relational being has ultimate reasons. The source, or causative cause of the Christian vocation, is God who initiates the vocation. God is also the ultimate intentional cause of the vocation. In order for a vocation to come into existence in the form of real being, an act of decision is needed. Thanks to it the vocation is constituted.