Legal basis posting - Federal Public Service Employment, Labour and Social Dialogue

Directive 96/71/EC of the European Parliament and of the Council of 16 December 1996 concerning the posting of workers in the framework of the provision of services.
Directive 2014/67/EU of the European Parliament and of the Council of 15 May 2014 on the enforcement of Directive 96/71/EC concerning the posting of workers in the framework of the provision of services and amending Regulation (EU) No 1024/2012 on administrative cooperation through the Internal Market Information System ("the IMI Regulation").
Directive (EU) 2018/957 of the European Parliament and of the Council of 28 June 2018 amending Directive 96/71/EC concerning the posting of workers in the framework of the provision of service
Belgian Act of 5 March 2002 concerning the working, remuneration and employment conditions in case of posting of workers in Belgium and the monitoring thereof (see the following links : in French language or in Dutch language).
Royal Decree of 1st April 2007 implementing the Belgian Act of 5 March 2002 (a consolidated version of this text can be found via the following links: in French language or in Dutch language).