This means you will not be entitled to reimbursement of your expenses for healthcare services from the Norwegian National Insurance Scheme. This applies even if you are living in Norway while working abroad, including in the Nordic region.
If you are resident in Norway but work in another EU/EEA country or Switzerland, you should check whether you are covered by a national insurance scheme in the country in which you are working which entitles you to form S1 from the country of work. Form S1 is a certificate of entitlement to coverage of your expenses for healthcare services received in your country of residence.
Form S1 is not used within the Nordic region. If you work in another Nordic country and live in Norway, you will have health rights here in the same way as other Norwegians.
When you accept a job in another EU/EEA country, you must check whether you will become a member of that country's national insurance scheme. If you are not covered by a national insurance scheme in the country in which you will be working, you should consider taking out private insurance. This is important in case you need healthcare.
Example
Johan wants to work in Italy and gets a job as a bartender at a bar in Rome. He moves to Italy in order to start work. This means he is not a member of the Norwegian National Insurance Scheme and will therefore not be entitled to social security benefits from Norway while he is working in Italy. Johan must therefore find out whether he is covered by the Italian national insurance scheme.