Please Advise!!! I have been working in a non-profit org. as a fulltime employee in OPT(f1) stutus. My pay check comes with deduction of social security and Medicare tax. I talked with my employeer they said in full time job I need to pay the all taxes no matter of status. One of my friend from India told me we are not supposed to pay FICA in OPT. Does any who have the detail information about it? Thanks