Your BF would have to ask the employer about that. If the W-2 is incorrect the the employer can issue a corrected W-2. But if your BF did not fill out a W-4 to have more withheld then it is what it is now. He can change it going forward if he is still working for that employer.
https://ttlc.intuit.com/questions/2273878-why-did-my-refund-drop-when-i-entered-another-w-2
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
