Miscalculated Pays

Hi

When doing weekly pay we have noticed that an additional hour has been being added to our staff's weekly pay and the pay has been being miscalculated. E.g a staff members timesheet has said 8 hours but the pay slip and pay run has noted 9 hours and has calculated pay for 9 hours.

We have managed to fix it so that the hours worked are being accurately reflected, however the pay is still being miscalculated by the system and is including an extra hours pay.

How do we fix this so that pay isn't continually being miscalculated and our staff don't get overpaid?

thanks