If you feel there is an error in your payroll rate, calculation methods, or any other aspect of benefits, vacation, etc. you must immediately bring this concern to the payroll department. If you wait, you will make it more difficult to address the issues if legitimate.
Commentary (if any):
WARNING: Do NOT simply adopt a policy or add it to your handbook or manual without consulting with a qualified HR professional or employment lawyer. A sample policy may not be proper or even lawful in your particular situation. You’ve been warned.