22. A person who ceases to be a member of a supplemental pension plan with regard to an employer party to this plan and who subsequently returns to the same or other employment that is pensionable employment under that supplemental pension plan shall, to the extent provided for by this chapter, be a member of this plan if the employment is also referred to in the first paragraph of section 7, unless the supplemental pension plan requires the person to resume membership in that plan pursuant to a clause pertaining to interruption of service.