Payroll Stop( Salary Stop)

Hello,

My client side one Sales Division is available Every time Three/Four employees not reporting to office Two, Three months. Payroll is live,

Then they come after Two Three months.

Eg.

Oct-2008 Presend

Nov-2008 Presend

Dec-2008 Not Reporting

Jan-2009 Not reporting

Feb-2009 & He is Coming

Please let me know How can i stop Dec-2008 & Jan-2009 Payroll ( Salary Stop)

Please Advised

Regards

MHPO