Overpayment of third party sick pay

[tsuewalker]

Client received third party sick pay in November and December, 2014. She received a letter in January, 2015 that she had been overpaid approximately $500 and had to send them a check. She then got a letter saying something about IRS doesn't permit W-2's with a negative amount and she would need to apply this credit to the employee's W-2 wages earned in 2015 and gives numbers showing taxable amounts for federal income tax and withholding. I'm obviously working on a 2015 return. How do I handle this?

Thanks for your help in advance.

Tanya

[taxea]

The employer needs to issue a corrected W2, not give the figures for the W2 in a letter.