Which document must be retained for a specific duration after employment, according to IRS regulations?

The I-9 form is a critical document that employers must retain for verification purposes regarding an employee's eligibility to work in the United States. According to IRS regulations, employers are required to keep the I-9 form for three years after the employee's hire date or for one year after the employee's termination, whichever is longer. This retention period is important to ensure compliance with federal immigration laws and to provide documentation in the event of an audit.

While other documents like W-2 forms, payroll records, and tax filings also have their own retention requirements under different regulations, the specific timeline and purpose for the I-9 form distinctively highlight its importance in confirming employment eligibility. This makes it crucial for employers to manage and maintain these records appropriately to avoid penalties and ensure compliance with U.S. labor laws.