For those of you who travel overseas, you know all about the time and effort it takes to make the adjustment of being "back home." For some, it is a "reverse culture shock" that requires one day of reintegration back home for every day away. In other words, 10 days away, 10 days readjustment time. Fortunately for others, the transition back to work might be rather quick. In my view, this same formula applies to employee vacations, no matter where they go. It requires one day to adjust for every day of vacation that employees are away from work. At least that’s how the formula applies to me.