57. No provision of any by-law passed under this division, or amendment of the retirement plan of any company of which the Company has acquired 90% of the shares or of any electricity cooperative whose property it has acquired, shall reduce the pension credits of any member in respect of remuneration and service or membership in the plan prior to 1 January 1966, except, in respect of each plan, with the consent of two-thirds of the members of the plan.
1965 (1st sess.), c. 33, s. 3; 1978, c. 41, s. 1; 1999, c. 40, s. 145.