Its a well known fact that in avitaion Pay is inversly proportional to the amount of work being done.
So the longhaul crew watching the FMS crawl its way over the pond for 6 hours while being fed watered and generally doted over by some lovely young thing before sloping off to the 5* hotel earn maybe 10 times the cash of a survey pilot doing 12 hour shifts hand flying round the north sea at 50 feet and living in an unheated caravan in the north of scotland in winter.
It has always been thus