the single most important group of employees in any airline, a/c can't fly without crews but they can without accountants.
Slowly,
That's what the 'Australian Airline Pilots Federation' thought in 1989, they've never had the same 'clout' since!
They tended the resignations of practically every Australian (Domestic) flight crew member overnight. Australian Airlines & Ansett Australia subsequently operated an entire summer season without any of these pilots or flight engineers on the payroll and they managed to make profits during the same period!
Nobody is indispensible!