At retirement, the total service credited a member shall consist of the service rendered by him or her as an employee during his or her membership, and also, if he or she has a prior service certificate which is in full force and effect, the service as an employee certified on his or her prior service certificate.
Service creditable on retirement
R.I. Gen. Laws § 36-9-28., under Chapter 36-9 Retirement System — Membership and Service Credits.
R.I. Gen. Laws § 36-9-28.