Modifying Oracle ESS functionality

 We need to modify Oracle ESS so that it looks at the "Final Process Date" instead of the "Actual Termination Date" in relation to what pay stubs it will let a terminated employee view. Currently, recently terminated employees can not view their last pay checks in ESS. For example, an employee has an "actual termination date" of 9/13, and their last pay check is dated 9/30...the employee is unable to view this payment in ESS.

When an employee is terminated on 9/13, Oracle will not allow the employee to login after 9/13. But the employee is paid till 9/30 and he/she wants to see their pay after 9/13, they should have the ability.  I know this is not how Oracle is designed, but we need a way to implement this solution.