As many as a quarter of workers "throw a sickie" on their first day back from holiday, according to a survey.
While 25% report in sick, around the same number spend lunch hours daydreaming about their next trip, the poll by foreign exchange company Travelex found.
Male holidaymakers tend to pack on the day of departure while 40% of women start filling suitcases a week in advance.
Based on responses from 2,000 in-work adults who had been on holiday, the survey also showed nearly half admitted to being distracted and forgetful at work when returning from a break.
Also, 30% got annoyed by fellow workers still in holiday mode.
For those travelling, almost 60% feel relaxed as soon as they put their feet up in their destination hotel.