How long does a business have to keep employee time sheets?

How long does a business have to keep employee time sheets?
Businesses should keep employee time sheets for as long as they might need them for tax purposes. If the IRS requests the company's or an employees payroll or tax information, you may need the time sheets to verify that your forms are correct. I'd say keep the time sheets for at least 2 or 3 years. If you have an electronic time clock to monitor employee attendance, you could easily store the information electronically for as long as you may need.