According to a 2003 American Management Association report, "Email Rules, Policies and Practices Survey," the average time spent working on email is one hour, 47 minutes. What's more, 31 percent of respondents said that they spend more than two hours a day on email. Although those figures seem like a lot. The study points out, however, that three quarters of respondents spend less than 25 percent of their email time on spam or personal email. So at least they're working.