The first thing to remember is that a problem with an employee may only seem like a problem to you. It is very possible that the employee is not aware that what he is doing is inappropriate. Before any further discipline is required, in most cases, the employee's direct supervisor should be instructed to make the situation clear to the employee.
If an employee shows up 10 minutes late every day as a habit, he may assume since no one has said anything that this isn't considered a big deal. However, if a supervisor approaches him and makes him aware that it is not acceptable, then the next time he will have no excuse. This rule applies to nearly every situation.