A study by Britain’s Institute of Leadership and Management reveals that more than a third of managers surveyed say they work while on summer vacation. And 80 percent of those respondents say they frequently check and answer emails, the UK’s Telegraph reported.

As you could imagine, bringing your Blackberry on a family vacation has to take some of the fun out of it. To that end, 40 percent of the 2,500 managers surveyed say they return to the office feeling no more relaxed than when they left.