Hi I have a question. My OPT was between 6/6/14 and 6/5/15. My company filed my H1B cap petition to the USCIS on 3/31/15. I received the H1B Receipt Notice on 4/17/15 (also Approval Notice on 9/23/15, H1B valid from 10/1/15). So my OPT was automatically extended to 9/30/15 (This was also written in my I-20). My question is: when I claim FICA, should I claim the period between 1/1/15 to 6/5/15? Or I can actually claim the period between 1/1/15 to 9/30/15? Thank you.
