“Home for the holidays” can mean different things to different workers. For some, it simply means taking several days off from the daily commute to a nearby job. For others, it may mean a dream trip to the other side of the country or even the world. But many of these holiday-bound employees may share one thing in common: the use of mobile devices to keep in touch with colleagues and get some unavoidable work done during the break. But these devices can cause trouble for your business -- and trouble doesn’t observe vacations.