Your best employees are the ones who are confident they can always get good work elsewhere whenever they want and have no qualms doing so. They stay with your company because they want to stay and are among the most committed. Employees who are sticking with your company because they are afraid to leave even though they dislike their jobs will be with you forever, perform the minimum necessary, but never become your stars. The irony is that the most committed of your employees are among the most disloyal. It’s those who swear allegiance that you need to worry about.