All Valid points. The LCC model is based on crew working overtime, not sitting on 600hrs a year. While Jetstar continue to roster without using a proper bidding system guys are going to UFD and not come in on particular days that they need off, or simply cant be bothered doing. Other guys will either pick this up on STBy or WDO. Another 50 (as indicated by GS) people joining the company wont change things significantly in the grand scheme of things. Especially since this is mostly to cover annual leave and QF guys going back and some wide body movement. Slightly less WDOs, and slightly less OT yes. The company lends itself to using STBs and WDOs on a faily regular bases. Ports with no Engineering coverage/ delays due min turn around times/ rostering errors / carrying MELs/ rosterting such that any delay results in crew walking of..etc etc.. why come in and waste a Saturday if your not in OT or get rostered a 2 sector day? Its the system, its far from great but that comes down to many other factors.