Before a German insurance contract is signed, the insurer must ask and advise. Section 6 of the Insurance Contract Act says that the insurer must question the customer nach seinen Wünschen und Bedürfnissen, about his wishes and needs. It must advise him. It must also state die Gründe für jeden zu einer bestimmten Versicherung erteilten Rat, the reasons for each piece of advice about a particular insurance. How much advice is needed depends on how hard the product is to judge and on the customer and his situation. The effort should also be in reasonable proportion to the premium.
The duty continues during the contract when the insurer can see a reason to ask. A customer can give up the advice only in a separate written declaration. The insurer must warn him that this can weaken a later claim for damages. An insurer that breaks the duty must pay for the damage, unless it is not at fault.