My employee is taking paid time off (PTO) while waiting for a decision on their Paid Leave Oregon benefit application. If they receive both Paid Leave benefits and PTO for the same week, can I ask the employee to return the PTO wages they were paid?

It depends. You will need to create your own policies on the use of PTO while your employee is waiting for or receiving Paid Leave benefit payments. You can decide if your employees can use paid sick time, vacation leave, or any other paid leave they have earned, in addition to Paid Leave Oregon benefits (ORS 657B.030).