12. A pension granted pursuant to paragraph 4 of section 6 is, at the time prescribed under section 119 of the Act respecting the Québec Pension Plan (chapter R-9), indexed annually at the rate of increase of the Pension Index determined by that Act from 1 January following the date on which the employee ceased to be a member of the plan to 1 January of the year in which the pension is payable.
From 1 January following the date on which the pension is payable, the pension is indexed in accordance with the first paragraph of section 115 of the Act, and the first adjustment resulting from indexing shall be carried out in accordance with the first paragraph of section 116 of the Act.