2. Every local municipality may adhere by by-law to the pension plan established by this Act. The by-law may, in respect of the persons who are members of the council at the time it is adopted, have retroactive effect from 1 January of the year in which it comes into force.
The by-law shall not be repealed, and no amendment made to it may have the effect of restricting the right of elected municipal officers to participate in the plan.
1988, c. 85, s. 2; 2001, c. 25, s. 156.