35. A plan shall contractually provide that upon termination of his employment or upon termination of his membership in the plan, an employee who is not entitled to the deferred pension prescribed in section 31 is at least entitled to either the reimbursement of the aggregate of the contributions, other than voluntary additional contributions, made by him since the qualification date or the deferred annuity arising from such contributions.
1965 (1st sess.), c. 25, s. 37; 1975, c. 18, s. 12.