Its just like nationality based employment rights(need to be citizens or have a visa/permit to work) but more granular. It can have its place, i.e. a way to ba

Its just like nationality based employment rights(need to be citizens or have a visa/permit to work) but more granular. It can have its place, i.e. a way to balance bargaining power with the employer. It’s inherently anti meritocratic though. In some cases it’s not about merit or about limiting supply however. In some cases it’s impractical to test someones work continuously, so instead it becomes honor based. That is, you are expected to go through an elite track and succeed in an exam once and then you are good for life unless you commit fraud or show gross incompetency.