Must supervisors approve the time that variable-hour, exempt, non-teaching employees enter?

No. The time entry for variable-hour, exempt employees is required in order to meet the “proof of hours worked” requirement under PPACA; it does not determine what an employee is paid. Reports are provided to departments on a monthly basis to allow them to review the hours worked that the employee enters into time-reporting and reconcile that with the full-time equivalency (FTE) listed for the employee in the HR system.