18. Where a person has received compensation to which he or she is not entitled, the Société may, without prejudice to any legal recourse, deduct the amount of the debt from any amount due to that person, in the following manner:(1) if the amount due is an indemnity payable every 14 days, the Société may:(a) reduce the amount of compensation by a percentage of 50% until the sum owed is repaid in full;
(b) reduce the amount of compensation by a percentage than that indicated in subparagraph a where the consents to this or where it appears impossible to the entire sum owed because of the amount and foreseeable length of compensation payments;
(2) where the amount due is not compensation payable every days, the Société may subtract the sum owed from that amount pay any difference.