45. If the act governing the employment or office accepted by such officer provides a pension for the holder thereof, the latter may, for the purpose of his pension, choose between the provisions of this act and those of the other act.
A written notice to that effect must be sent within the month following change of employment.
R. S. 1964, c. 14, s. 34; 1983, c. 24, s. 20, s. 63.