80. The member contribution is paid in equal instalments, according to the periodicity provided for under the plan. However, if they relate to the current service contribution, such instalments may represent an hourly rate or a proportion of the remuneration. The rate or proportion shall be uniform unless it is established by reference to a variable authorized by Retraite Québec.
Where the member contribution is not determined at the beginning of the fiscal year, the member shall, until an actuarial valuation report is transmitted to Retraite Québec, continue to pay the contribution fixed for the preceding fiscal year. If the contribution so paid is less than what should have been paid according to the report, the portion still to be paid may be distributed uniformly over the period remaining until the date of the next actuarial valuation required in accordance with paragraph 3 of section 118 of the Act, plus, where applicable, the interest referred to in section 48. The amount of the contribution may also be adjusted if the contribution that should have been paid according to the report is less than what was paid.