Really? Is that is what is on your actual W-2 form?
Or are you looking at paystubs?
That is too much if that is what boxes 4+6 add up to on your actual W-2. IF so, then you need to take it back to the employer for correction.
Either it was an entry error on their part and just needs a corrected form (W-2C)....or they need to refund you the extra themselves AND issue a W-2C with the proper amounts.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*