Tax and the Middle East
When they tried it in the US they abandoned it almost immediately and fired the man that announced it - they had more resignation letters and request for packers than they could handle.
It may not have the immediate effect here, but you can bet that people will look at packages being offered and wonder how quickly they will get eroded.
Salaries in Bahrain don't match Saudi because it's more of a hardship posting. But as Bahrain goes back into the Islamic dark ages, and the value in staying here diminishes, they are going to have to start upping the ante or they will seriously struggle to get people.
We here in the petrol factory are having Indian mid-level engineers turn down BD1500 a month ++ because they can earn that in Delhi!