I see this is old, but for those doing it in QBO here's what I cam up with: do a journal entry. Be sure the bill/voucher for the vendor expense that the employee paid is already in there. Then in the JE debit A/P for the bill paid and be sure to enter the name in the Name column, Credit A/P for the amount and enter the employee's name in the Name column. Make a 'payment' (of 0) for the vendor bill, and pay the employee by check or whatever.
