57. (1) For the purposes of this Act, subject to subsections (2) and (3), a participant who is under pensionable age is a contributing participant.

(2) A participant who has opted out—

(a) ceases to be a contributing participant on the opt-out date, and

(b) if assigned a re-enrolment date, becomes a contributing participant again on that date.

(3) A participant who suspends contributions under section 62 ceases to be a contributing participant for the period of suspension.