How far can an employer go back in your personnel folder for discipline purposes?

Employers typically can review an employee's personnel file for disciplinary purposes, but the length of time they can go back varies by company policy, local laws, and the nature of the discipline. Generally, most employers consider recent incidents more relevant, often focusing on the past one to three years. However, serious infractions may warrant a longer look. It's essential for employers to follow their own policies and applicable laws to ensure fair and consistent practices.