> have been denied to work in german markets That is illegal and a violation of treaty obligations on Germany's part if the countries you're talking about are

> have been denied to work in german markets That is illegal and a violation of treaty obligations on Germany's part if the countries you're talking about are part of the European Union (EU), or the European Economic Area (EEA). See: https://en.wikipedia.org/wiki/Freedom_of_movement_for_workers_in_the_European_Union https://en.wikipedia.org/wiki/Freedom_of_movement_for_worker... You don't need a work visa or any sort of permission from the German government to reside and work in Germany, if you are a EU citizen or a citizen of an EEA member. It is a right.