You work for 1 employer in two or more EU countries
If you work for 1 employer in two or more EU (European Union) countries, it is not always clear which country's social insurance schemes you are covered by. This will depend on how many hours you work in the country where you live.
Do not forget to inform the authorities that you are working in more than one country
If you are going to work in more than one EU country, you must inform the social security organisation in the country where you live. If you live in the Netherlands, you should inform the SVB. You are obliged to do this by law.