How many hours should an employee work to participate in a 401k plan?

To participate in a 401(k) plan, an employee typically needs to work at least 1,000 hours in a 12-month period, according to IRS guidelines. However, specific eligibility criteria may vary by employer, so it's essential to check the plan's rules. Some companies may offer participation to part-time employees who work fewer hours. Always consult your employer's plan documents for precise requirements.