Well on a drilling rig you have about 16-22 people at any given time and only 4-6 of us do the hard stuff. The rest are highly specialized so they don't move around much but eat as much as we do. Most people that get promoted past the labour jobs just get fat. Outside of drilling, most oil field work is 10 minutes of work and 2 hours of sitting and many can't turn down unlimited free food. Such fucking pigs out here.