For the school workforce census (SWC), you need to add the Reason for Leaving fields for terminated employees at the time of termination.
If you haven't added this for an employee when they were terminated, this can also be added retrospectively.
To add a reason for leaving to a terminated employee:
Search for the employee and go to their profile.
Click Employment, then Position.
Click Edit Terminated Employee.
Select an option from the Reason for leaving dropdown.
Click Save.