This article, which takes up with slight adjustments the text of the paper on "International Trade and Labour presented by the author at the XXII World Congress of the International Society for Labour and Social Security Law, seeks to give an account of formation process of a new transnational labour law applicable to work developed within global value chains led by multinational enterprises and to present its main components, as well as the common logic underlying it. It pursues to highlight how this new law, whose purpose is to promote the application of a base of fair working conditions within these chains that coincides with human rights of labour content, is made up of a wide variety of instruments of very diverse origin and nature - private and public, national and international, soft and hard, unilateral and agreed - all of which interact with each other to give rise to a result in terms of regulation applicable to any national territory, regardless of the person that occupies the position of employer. This diagnosis is accompanied by the reconstruction of the normative model underlying the system of labour regulation in the global space introduced by this new law, as well as the presentation of its main challenges for the future.