Artikel 42

The holder must give notice of non-payment to his endorser and to the drawer within the four business days which follow the day on which the protest is drawn up or the equivalent declaration is made or, in case of a stipulation retour sans frais, the day of presentment. Every endorser must, within the two business days following the day on which he receives notice, inform his endorser of the notice which he has received, mentioning the names and addresses of those who have given the previous notices and so on through the series until the drawer is reached. The periods mentioned above run from the receipt of the preceding notice.
When, in conformity with the preceding paragraph, notice is given to a person who has signed a cheque, the same notice must be given within the same limit of time to his avaliseur.
Where an endorser either has not specified his address or has specified it in an illegible manner, it is sufficient if notice is given to the endorser preceding him.
The person who must give notice may give it in any form whatever, even by simply returning the cheque.
He must prove that he has given notice within the limit of time prescribed. This time-limit shall be regarded as having been observed if a letter giving the notice has been posted within the said time.
A person who does not give notice within the limit of time prescribed above does not forfeit his rights. He is liable for the damage, if any, caused by his negligence, but the amount of his liability shall not exceed the amount or the cheque.