Sure there are a few full time rampies pulling big bucks, but the vast majority of new hires for at least the last 5-10 years were already employed by a subsidiary, Qantas Ground Services.
This led to a workforce predominantly guaranteed 20h/week and salary generally equal to or in some cases, less than the ground handling companies they compete with.
Trying to break free from these conditions was an aim of the last EBA negotiations.
So i'm not sure how much $$ they will save on staff, but perhaps capital expenses.. if they have to buy 50 new tugs over the next few years I think they can easily get to $250K each.