Read about the disadvantages of preparing payroll manually.
2. Traditional Time Clock Error
2. Traditional Time Clock Error

The time clock itself is another source of inaccurate payroll data.  Traditional time clocks allow missed punches, duplicate punches, and smudged, illegible timecards.  With traditional timecards and clocks, missed punches will not be caught until the timecards are being manually tallied.  Then supervisors or managers are required to supply the missing information based on their memory of "who was at work, when."

When payrolls are prepared manually, they are not only time-consuming, but mistakes are inevitable and costly. It's generally accepted that payroll is a repetitive, nonproductive, administrative activity, the time and cost of which should be minimized.  Payroll tasks can draw off your resources and keep you from focusing on the more important aspects of your business.