Within how many days must an employer file an I-9 Form to verify a new employee's legal citizenship?

The requirement for an employer to file an I-9 Form, which verifies an employee's legal right to work in the United States, is that the form must be completed within three business days of the employee's start date. This timeline allows employers to ensure compliance with immigration laws while also providing a structured window for new hires to submit their documentation confirming their identity and employment authorization. Although there are several aspects of filing an I-9 Form, the core requirement focuses on the three-day deadline, which is a key date for both employers and employees to keep in mind during the onboarding process.