And usually means the same old 900 hrs per year stuffed into those 3 wks per month, which hardly seems fair?
In other words you're foregoing 25% of your salary (£15000 for a Captain) to obtain the lifestyle that they could so easily give you anyway if they could only be bothered...
However £15K off your wages soon makes them sort out the roster, doesn't it?
Not too impressive, is it?