29. A public office holder who has left public office, who has received or is receiving a severance allowance or payment and who holds an office, employment or any other remunerated positon in the public sector during the period corresponding to that allowance or payment shall refund the part of the allowance or payment covering the period for which he receives a salary, or shall cease to receive it during that period.
Notwithstanding the foregoing, where the salary he receives is lower than the salary he received previously, he shall be required to refund the allowance or payment only up to the amount of his new salary, or he may continue to receive the part of the allowance or payment that exceeds his new salary.