Further, when a person is re-hired, common practice in many of my client sites is to set the IT 3 - ERA date for payroll as the pay period start date corresponding to the employee's re-hire date and the ERA date for Time eval = re-hire date.
This can be done through dynamic actions for IT 1, so that the payroll area in IT 1 is used for determining the payroll ERA date. Also for this a function call is used to determine the payroll ERA date and the date is passed to the dynamic actions in RP50D-DATE1 and the dynamic actions would update IT 3.