I have a medical reimbursement plan with my current employer. I am leaving them soon and they want me to pay them the amount they would take out of my check each payday from the time I leave to the end of the year. They want this in lump sum when I leave. I signed an agreement when I enrolled in the plan that says they will take the amount I owe out of my last check and that I agree to pay them any amount that is left. They pushed me to sign a promissory note, but I refused and they said it would be a "black mark" on my employment record. Can they do this? Do I have to pay the money to them? I will not be getting the pre-tax benefits so what good is it to me?