After terminating an employee, we (certified/return receipt requested)mailed her paycheck to her home address within the 72 hour time frame. After 4 days she still had not received the check. The post office requires that a piece of certified mail remain at the post office for a period of 15 days before they will return to us. Therefore, they will not put a trace on the piece of mail. What are our obligations to the employee? Are we legally required to stop payment, at a cost of $22.00 and then send out another check to this employee? Also what if the employee has been served with a notice to come in and pick up the letter but ignores it? We are trying to determine an internal policy for this within our accounting department. Thanks for any help you could give me.