I have been working on OPT for the last 1 year, I just found out that you don't have to pay social security and medicare while you are on OPT. I have been paying that for the past 1 year. I notified my payroll about that, they are going to stop deducting in the future but they have asked me to file myself to get the ones i have paid in the past. Does anyone know what all you need to do????? Any kind of suggestion and help would be appreciated....Thanks