As Thanksgiving weekend officially kicks off the holiday season, one tradition that is returning this year is online shopping at the office. Cyber Monday, a term coined by the National Retail Federation for the first Monday after Thanksgiving, will likely be a busy day for Internet use at work. Twenty-nine percent of workers say they have holiday shopped online at work, on par with previous years. Of those planning to shop online this year, 27 percent will spend one hour or more. More than one-in-10 (13 percent) said they will spend two hours or more. Workers should be mindful of their companies' electronic communications policies, though, as nearly half (47 percent) of companies said that they monitor Internet and e-mail use of employees. This year's survey included more than 2,400 employers and more than 3,100 workers.