You are automatically affiliated to the Caisse Nationale de Santé (CNS) for the period of your employment. You will not receive any confirmation from the CNS - your contract is proof of affiliation.
You have already worked in Luxembourg or are a Luxembourg resident: you therefore have a Social Security number already. Please send it to Randstad.
You have never worked in Luxembourg: in order to register you, we need a copy of your ID and your date and place of birth. Social Security will then send us your number and Randstad will post it to you. It is unique and valid for life (the number always begins with your year, month and date of birth followed by five numbers).
If you are a cross-border worker, you have access to medical care in both Luxembourg and your country of residence. To obtain a refund of the cost of your care, you need to send the appropriate bills to the social security organisation of the country where you received the care. If you have health insurance to cover any excess charges, you will need to send the following to the social security entity of your place of residence:
Form E106 for residents of France and Germany
Form B1 for residents of Belgium.
These documents can be obtained from the CNS or downloaded from their web site at www.cns.lu.