This Practice Note details the effect of the Transfer of Undertakings (Protection of Employment) Regulations 2006 (TUPE 2006), SI 2006/246 on the ability to vary or change terms and conditions of employment. See Practice Note: TUPE—the pre-January 2014 position [Archived]—Variation of contract terms for information on the position for cases where: • the relevant transfer under TUPE 2006 took place before 31 January 2014, or • the purported variation was agreed before 31 January 2014 (or, in a case where the purported variation was not agreed, it started to have effect before that date) This Practice Note contains references to case law of the Court of Justice of the European Union (CJEU). For guidance on whether judgments of the CJEU are binding on UK courts, see Practice Note: Assimilated law—Assimilated case law. EU-derived laws, such as much of TUPE 2006, that have been made to implement UK obligations under EU law (such as the obligation to implement Directive 2001/23/EC, the Acquired Rights Directive (ARD)), are assimilated law. For further information, see Practice