Errors on the documents a person presents for identity and employment authorization during the Form I-9 process can cause significant stress for the employer and employee if the employer participates in E-Verify. These errors cause the E-Verify system to return a Tentative Nonconfirmation (TNC) and must be fixed before the employee is found employment authorized. TNCs can be issued regardless of the employee's citizenship or immigration status, and can result in a great deal of stress and lost work time while the employee has the error corrected.