I did my 140(NIW)/485 concurrent filing through my employer. Is there any advantage over self-petitioned NIW? Also do I have to stay with the employer for half a year after the approval? If I leave my current employer before the approval, do I have to file 140(NIW)/485 again? I just sent out everything last Thursday (4/7/2005) by overnight Fedex. When should I get the notice of receipt? Thanks for your kind answers.