Section 19-20-801 - Eligibility for service retirement(1) A tier one member is eligible to receive a service retirement allowance calculated under 19-20-804(1) if the member: (a) has been credited with at least 5 full years of creditable service and has attained the age of 60; or(b) has been credited with full-time or part-time creditable service in 25 or more years.(2) Except as provided in subsection (3), a tier two member is eligible to receive a service retirement allowance calculated under 19-20-804(1) if the member: (a) has been credited with at least 5 full years of creditable service and has attained the age of 60; or(b) has been credited with full-time or part-time creditable service in 30 or more years and has attained the age of 55.(3) A tier two member who has been credited with 30 or more years of creditable service and has attained the age of 60 is eligible for a professional retirement option allowance calculated under 19-20-804(2).(4) To receive a retirement allowance under 19-20-804, the member must have terminated employment in all positions reportable to the retirement system and must file a written application with the retirement board.(5) A vested member who has attained normal retirement age has a nonforfeitable right to the benefits accrued and payable under the provisions of this chapter, subject to the member's right to a refund of the member's accumulated contributions under 19-20-603.Amended by Laws 2019, Ch. 276,Sec. 10, eff. 7/1/2019.Amended by Laws 2013, Ch. 366, Sec. 13, eff. 7/1/2013.The amendment by Laws 2013, Ch. 389, Sec. 13, eff. 7/1/2013, became void with the passage of Laws 2013, Ch. 366.En. 75-6208 by Sec. 103, Ch. 5, L. 1971; amd. Sec. 2, Ch. 57, L. 1971; amd. Sec. 2, Ch. 422, L. 1971; amd. Sec. 4, Ch. 507, L. 1973; amd. Sec. 3, Ch. 26, L. 1975; amd. Sec. 5, Ch. 127, L. 1977; amd. Sec. 5, Ch. 331, L. 1977; amd. Sec. 1, Ch. 443, L. 1977; R.C.M. 1947, 75-6208(2)(a); amd. Sec. 3, Ch. 527, L. 1983; Sec. 19-4-801, MCA 1991; redes. 19-20-801 by Code Commissioner, 1993; amd. Sec. 22, Ch. 442, L. 1997; amd. Sec. 20, Ch. 111, L. 1999.