> ## Documentation Index > Fetch the complete documentation index at: https://docs-test.symmetry.com/llms.txt > Use this file to discover all available pages before exploring further. # Supplement B Overview > Supplement B of Form I-9 is used for rehiring employees or addressing issues related to reverification of work authorization. Supplement B of Form I-9 is used for rehiring employees or addressing issues related to reverification of work authorization. This supplement allows employers to reverify an employee's employment eligibility without having to complete a new Form I-9. ## When to use Supplement B? According to the [U.S. Citizenship and Immigration Services (USCIS)](https://www.uscis.gov/i-9-central/complete-correct-form-i-9/completing-supplement-b-reverification-and-rehires-formerly-section-3), employers should use Supplement B in the following scenarios: * **Rehire employee** * If an employee is rehired within 3 years of the date they originally completed Form I-9, employers can use Supplement B to confirm that the employee remains authorized to work. * **Reverify documentation** * You must reverify an employee's employment authorization no later than the date employment authorization expires. The employee must present a document that shows current employment authorization, such as any document from List A or C. You can also accept certain receipts for re-verification. * **Name change** * If an employee has a legal name change, Supplement B may be completed to maintain the correct information on the form. For additional name change scenarios you may encounter, please refer to the USCIS website for guidance. ## Who should complete Supplement B? The employer or the employer's authorized representative completes and signs Supplement B. Employers are required to retain Supplement B along with the original Form I-9 as part of their records and ensure compliance with federal employment eligibility verification laws. Read more about document retention here: [I-9 Document Retention & Storage Requirements](/i9/compliance-and-audit-readiness/retention). ## Employees Ineligible for Reverification [According to the DHS](https://www.uscis.gov/i-9-central/completing-form-i-9/completing-supplement-b-reverification-and-rehires-formerly-section-3), employers should not reverify any one of the following: * U.S. citizens and alien nationals * Lawful permanent residents who presented a Form I-551, Permanent Resident or Alien Registration Receipt card for Section 2, including conditional residents * List B documents ## Supplement B [](/assets/images/zendesk/33475986237844.jpg)