Many years ago when common sense made a regular appearance you were paid for an expatriate job a little more in order to compensate for being away from the motherland be that UK, US, Aus etc. The idealised version of that would be the famed Cathay 'A' scale of yore. This concept appears to have disappeared latterly. I might add that the EK pilot package does not compare favourably with legacy carriers in the 'developed' world. Although EK pays accommodation etc that is easily offset e.g. in the UK by the cost of income tax, NI and pension contribution.