Timesheet rounding is a method used by payroll departments to simplify the tracking of work hours. It involves adjusting the actual clock-in and clock-out times to the nearest specific increment, such as 5, 6, or 15 minutes. This ensures that payroll calculations are consistent and easier to manage. Most systems use a midpoint rounding rule, where any time before the midpoint rounds down, and any time at or after the midpoint rounds up.