Under retained EU law, a worker unable to take statutory holiday during the holiday year because of sickness must be allowed to carry four weeks of their holiday forward into the next holiday year, even if the employment contract forbids this (Dominguez v Centre Informatique du Centre Quest Atlantique [2012] EUECJ C-282/10). They do not need to prove they were too sick or injured to take their statutory holiday to be entitled to carry it forward (Plumb v Duncan Print Group Limited [2015] UKEAT/0071/15/DA).