Introduction The intra-EU posting of third-country nationals (TCNs) is a common labour mobility practice used by companies established in one Member State to provide services temporarily in another. Governed by Article 56 TFEU on the freedom to provide services, the posting of TCNs is rooted in the landmark Vander Elst ruling, Case C-43/93, which clarified that Member States cannot impose additional work permit requirements on lawfully employed TCNs posted from another Member State. While Directive 96/71/EC, the Posting of Workers Directive or PWD, as amended by Directive 2018/957/EU and complemented by Directive 2014/67/EU, the Directive on the enforcement of the PWD, provides the general legal framework for posting, these instruments remain silent on the specific modalities applicable to TCNs (for more information on the PWD, see Practice Note: Posting of workers in the EU). Moreover, the Directive ‘does not affect either the agreements concluded by the Community with third countries or the laws of Member States concerning the access to their territory of third-country providers of services; whereas this Directive