HR professionals assume that employees, on average, waste 56 minutes per day at work. But the truth is that U.S. employees admit to squandering more than two hours a day, says a new Salary.com survey of 10,000 people. The top distractions: surfing the Web, conducting personal business, "spacing out" and running errands. Young employees waste more time than older ones. Note: The number one reason employees waste time on the job, they say, is that they don't have enough work to do.