7. An employee who ceases to participate in this plan and who then takes up employment covered by the provincial Act shall, for pension purposes, conserve the benefits accrued to him under this plan upon ceasing to participate herein and shall participate in the provincial pension plan in the new employment covered by that plan.
In such case, the years and partial years of pensionable service accrued to him under this plan shall be added, for pension eligibility purposes only, to the service credited to him under the provincial pension plan where he has not received a refund of his contributions or is not entitled thereto under this plan, or where he is not a beneficiary of this plan upon ceasing to participate therein.