The Swiss authorities online
Foreign nationals must take out insurance for themselves and for their families with a Swiss health insurance company no later than three months after arriving or beginning work in Switzerland. Cross-border commuters domiciled in certain EU states have the option of taking out insurance in their country of residence instead of Switzerland.
If you work eight hours or more a week, you are covered against accidents by your employer.
If you are looking for work or lose your job, you must register with the regional unemployment centre (RAV). If you live abroad and work in Switzerland, you will receive your unemployment benefits in your country of residence.