13. No allowance, except the allowance for newborn children payable under section 8 in the case of the adoption of a child, shall be granted for any month preceding by more than 11 months the month during which an allowance is applied for.
Any change in the amount of a family allowance, allowance for young children or allowance for newborn children has effect from the month or quarter following the month or quarter during which the event entailing the change occurs in the family concerned.
1973, c. 36, s. 12; 1989, c. 4, s. 2.