Do my family members also need to register? That depends on their situation: Are they receiving a pension or benefit themselves? If so, they also have to Apply for a document S1/form 121. Are they not receiving a pension, benefit or income themselves? It may be possible to include them under your policy. The health insurance fund in your country of residence will decide and let us know. If you are living in the EU/EEA, Switzerland or United Kingdom you can register your family members on your S1/121 application form. Are you living in another treaty country? Then you will have to register your family members with the health insurance fund in your country of residence yourself. Do your family members still work in the Netherlands? If so, compulsory health insurance continues to apply and they must retain their Dutch health insurance. They will need an S1/E106 to register with a health insurance fund in your country of residence. They can apply for this from their Dutch health insurer.