Same over here where I work, low taxes (10% of my income) means the company gets to pay less for me to nett an acceptable take home.
Staff get paid what the market says they're worth, not what the union demands.
Sensible government policies recognizing aviation as a key area have ensured continued growth.
Looking at Australia with it's sky high taxes, union strangle hold and stifling government regulation, it's not surprising Qantas can't compete internationally.