Prof. Wilfredo Sanguineti Raymon is a professor of labor law at the University of Salamanca. He was a guest at the Department of Law in the period from 1 to 31 March. During his stay, in addition to a series of conferences, he held a series of seminars on the subject of multinational companies in the era of globalization, addressing the issue from an ethical point of view and deepening the implications of labor law and international law.