Another third of those asked by the website and mobile phone application dating company said they hoped that their Christmas party would lead to a physical interaction with a colleague, with one in ten saying that such behaviour had lead to a relationship in the past.
One in five married respondents said they hoped to have sex with a colleague at the Christmas party.
Respondents listed the stock room, work toilet and boardroom as the most likely locations.
Gaydar product manager Simon Johnson said: "The work Christmas party appears to be the playground to enjoy fun, festive frolics whether gay, straight, single, married or taken."