In Pereda v Madrid Movilidad SA [2009] IRLR 959 ECJ, the ECJ held that art.7(1) of the Working Time Directive must be interpreted as precluding national provisions or collective agreements that deny a worker who is on sick leave during a period of scheduled annual leave the right to take the annual leave at a later time, even if this is outside the holiday year in which the annual leave was accrued.
In HM Revenue and Customs v Stringer and others sub nom Commissioners of Inland Revenue v Ainsworth and others [2009] IRLR 677 HL, the House of Lords held that a claim for unpaid holiday due under the Working Time Regulations 1998 can be brought as an unlawful deductions from wages claim under ss.13 and 23 of the Employment Rights Act 1996.