Get your taxes done using TurboTax

You can't really do much with it on your tax return, other than include it as a "Medical Expense"(which is subject to severe limitations, so most people don't benefit from it).

However, your employer REALLY needs to go to a good tax professional.  They are either (1) Wasting money doing it this way and/or (2) Subject to GIGANTIC penalties for doing it this way.