It depends on the visa, country and nationality? Yes, I have to agree. Somehow, same profession, different salary scale did exist. Furthermore, not all Asian country received same salary scale. Country like Japan, Korea, Malaysia, Singapore, Australia, New Zealand. They have set up their own salary scale based on profession. Some of these country even better than European country in term of development especially in infrastructure.
(hopefully no offensive).;)., So, in term of hiring or recruiting staff, salary scale without choice will be based on this assessment. Hopefully, profession that based on nationality for example, Engineers must be XX nationality. HR staff from XY nationality, QS from YY nationality, document controller from XZ nationality should be review so that can create competitive atmosphere contribute to better quality and standard. Peace!