It is universal practice in numerous industries to pay foreign ex-pat staff more than the locals. There are very good reasons for this - not least of which is that you cannot get the necessary people to work for you if you do not. The reason that Bristows in Nigeria employ foreign helicopter pilots is that there are insufficient competent, experienced and available locals to employ in that capacity. Clearly if the necessary staff were available at a lower rate then the company would employ them. You are then forced to employ ex-pats at whatever it takes to get them to work for you - it is not rocket science, simply supply and demand. If you can buy a house for $x in Nigeria but that same house costs $xxx in the UK or Europe, you have to pay the wages necessary for you employees to run their family affairs in their homeland. I am at a slight loss to see the problem here - this is absolutely common practice throughout the world in every industry.