T-Vasis
I would think you'll find staff travel is a cost to Qantas.
FBT, a department with staff just for staff travel etc...
The Staff Travel Department of any large airline handles all aspects of Staff Travel, not just discounted leisure travel. There are significant requirements for managerial staff flying to meetings, engineers going to outports, crews re-positioning and more - many of which need to be accommodated at short notice.
In addition, the more enlightened airlines have the facility for staff to book their tickets on line, thus doing away with extra staff and the wasted time involved in having to visit a company office to lodge applications.
If managed properly, there are benefits and savings to both company and staff.