Is it legal for European freelancers to sign up to work in other countries?

The European blue card refers to the work permit to work in countries of the European Economic Area, which allows citizens of non-EU member countries to work in countries of the European Economic Area. According to the relevant regulations of the European Union, holders of European free work permits can legally work in the issuing country and look for job opportunities in countries outside the European Economic Area.

However, the specific legitimacy of working between different countries in Europe depends on the laws and policies of the target country. The countries of the European Economic Area include the member states of the European Union as well as Norway, Iceland and Liechtenstein. Although the holders of European free work visas generally enjoy certain freedom of employment when working in other countries of the European Economic Area, the specific provisions may be different due to different national policies.

Therefore, if you want to work in other countries in the European Economic Area where European free work visas are issued, I suggest you carefully study the laws and policies of the target country to confirm whether you are qualified to work legally. You can consult the embassy or consulate of the target country or the immigration bureau, or you can get detailed information and guidance through professional immigration consulting agencies.