As of my last knowledge update in September 2021, the legality of escorts and sex work varies across different countries in Europe. It's important to note that laws and regulations can change over time, so I recommend checking with up-to-date and reliable sources for the most current information. However, I can provide you with a general overview based on the situation up to 2021:

Netherlands: The Netherlands is known for its regulated sex industry. Prostitution is legal here, and sex workers are required to pay taxes and follow certain regulations.

Germany: Prostitution is legal and regulated in Germany. Sex workers are considered to be self-employed and are subject to certain health and legal standards.

Switzerland: Prostitution is legal and regulated in Switzerland, and sex work is considered a legitimate form of employment.

Austria: Prostitution is legal in Austria, but there are regulations and licensing requirements for sex workers.