After you file

Really it all just depends on the amount. I had this same prob a few years ago. I didn't get a w2 in the mail until July and my file deadline is April 15. It was only for 200 so it wasn't a big deal. If its under 500 you can get away without claiming it. So you can either take your chances and hope you don't get audited. Or you can report it and this drag out for months, possibly all year.