What to do in case of cross-border work? - You live in Belgium and work in another EEA country or Switzerland
As a cross-border worker, you take out health insurance in Belgium and in your country of work.

As a resident of Belgium , you must always join a Belgian health insurance fund . You are also entitled to reimbursement for medical care in Belgium.
- You will receive an S1 form from the insurance institution of your country of employment that proves that you are socially insured by that country.
- You can join CM with that form.
Where are your dependent family members insured?
In your country of employment they are entitled to health care under the social security system there if there is a right of return. Thanks to European rules, many countries grant your dependent family members the right of return.
Only Denmark, Ireland, Iceland, Finland, Norway, Sweden and the United Kingdom do not grant a right of return.