If you plan to get some online shopping done from the office this holiday season, you might want to spend your time wisely: New research finds that there is a good chance your employer is taking note of how much time you're spending surfing for deals while on the clock.Although they may not be restricting online access for the holidays, nearly half of all businesses are monitoring their employees' Internet use to ensure it isn't taking up too much of their time, according to a study from Robert Half Technology. The percentage of employers looking out for excessive online shopping is up from 42 percent a year ago but down from 55 percent in 2012, the study found.Just 25 percent of employers plan to completely block access to online shopping sites this year, down from 30 percent in 2014.