Any reference to earners in sections 50(1)(a) and (7), 58(1) and (2), 59(1) and (6) and 60(1) and (2) and in section 55(1)(a), as it applies in relation to an occupational pension scheme which is not a money purchase contracted-out scheme, includes, in relation to any particular time, not only a reference to earners who are in employment at that time but also a reference to earners who are not in employment at that time but who have been in employment before it or will be in employment after it.