Toolpusher($108,000); works in the rig offices and the rig floor. He also has responsibilities on the main deck. He is usually an experienced driller.
Offshore Installation Manager (OIM)($110,000); has often worked his way up through the drill crew ranks. He is in overall charge of the rig. Hence sometimes called "Man In Charge" (MIC).
Company man/woman($160,000); is the oil companies on board representative employee. He is not employed by the drilling company operating the rig. On a drilling rig an oil company employee works with the drilling company to supervise its interests, helping the strategy for drilling the well.