13. The administrator of a supplementary retirement plan whose members have chosen to participate in the Government and Public Employees Retirement Plan shall calculate the value of the assets and liabilities of the plan and shall propose adjustments to Retraite Québec to take into account any surplus or deficit.
The value of the assets and liabilities of the plan shall be calculated on the date on which the employees join the Government and Public Employees Retirement Plan in accordance with the rules set out in sections 17 and 19 to 25. The administrator shall calculate the value on the date corresponding to the end of the sixth month following the date of joining the plan, if that date is advantageous for the employees in terms of pension credits granted.