Do Both the Name and SSN on Your Tax Forms Agree With Your Social Security Card?(p87)

If not, certain deductions and credits may be reduced or disallowed, your refund may be delayed, and you may not receive credit for your social security earnings. If your Form W-2 shows an incorrect SSN or name, notify your employer or the form-issuing agent as soon as possible to make sure your earnings are credited to your social security record. If the name or SSN on your social security card is incorrect, call the Social Security Administration at 1-800-772-1213.