What if I decide to contest the tentative nonconfirmation (TNC)?
If you contest the TNC, you must indicate that on the TNC notice and return it to your employer. After both you and your employer have signed the TNC notice, your employer must immediately give you a referral letter with details on how to contact either the Social Security Administration (SSA) or the Department of Homeland Security (DHS) to resolve your case.
Both you and your employer must sign the referral letter. If you choose to contest the TNC, you must either visit SSA in person or contact DHS by phone (depending on the instructions contained in the referral letter) within eight federal government workdays of the date of referral to begin resolving your case.