Queensland Consolidated Acts(1) Where, in accordance with a provision in a credit sale contract or a loan contract, the credit provider exercises a right under the contract to vary the contract (otherwise than at the request of the debtor or in a manner referred to in section 39, 70, 71, 72 or 73) the variation does not have effect until--
(a) the prescribed period; or
(b) where the contract provides for a period of notice of the variation, that period;
whichever is the longer has elapsed after notice of the variation has been given to the debtor.
(2) Where notice of the variation of a credit sale contract or loan contract is given in a common form and posted by bulk postage, the notice shall be deemed to have been given 7 days after the date on which the last of the bulk postages was made.