Nearly three-quarters (72%) of the 1,000 people polled researched their holiday options at work, while 63% booked a break in the office.
More than three-quarters (78%) admitted using office facilities to prepare for their holidays, with the printing of travel documents the most common use.
The OnePoll survey for tour operator Cosmos also found that nearly a quarter (24%) spent more than one working day each year researching and booking holidays.
Fridays emerged as the most popular day for booking holidays at work, with Mondays the second most common day, the poll found. Escapism was the most common reason given (62%).