you're going to have to provide more info about the W-2 as to what it constitutes if other than the 457 amount. If you think it's wrong, you should first contact your employer to get an explanation and, if needed, a corrected W-2. That's what the IRS will tell you to do first.
Box 11. This amount is (a) reported in box 1 if it is a distribution made to
you from a nonqualified deferred compensation or nongovernmental
section 457(b) plan, or (b) included in box 3 and/or box 5 if it is a prior
year deferral under a nonqualified or section 457(b) plan that became
taxable for social security and Medicare taxes this year because there is
no longer a substantial risk of forfeiture of your right to the deferred
amount. This box shouldn’t be used if you had a deferral and a
distribution in the same calendar year. If you made a deferral and
received a distribution in the same calendar year, and you are or will be
age 62 by the end of the calendar year, your employer should file Form
SSA-131, Employer Report of Special Wage Payments, with the Social
Security Administration and give you a copy.
