Jetstar is a separate business from QF. Overheads and labor costs are totally different to QF.
Yes, the labour costs are totally different to Qantas.
Take the MOU for transfer of pilots from Qantas to Jetstar for example.
A Qantas pilot transfers to Jetstar for a fixed term of three years, whilst on that leave of absence that pilots "accumulation" of years of service for the purpose of long service leave is "frozen" at Qantas.
After the three years fixed term, if the pilot returns to Qantas the 3 years is credited towards the length of service for long service leave at Qantas.
Net result, no financial cost to Jetstar for long service leave obligations.
No wonder the J* business model is an amazing success.
MC