Ind. Code § 5-10.3-6-1
(a) The governing body of a political subdivision may adopt an ordinance or resolution specifying a departmental, occupational, or other definable classification of employees:
(3) who may each elect whether to become members of the fund or members of the plan.
An ordinance or resolution adopted by the governing body of a political subdivision under this subsection that specifies the departmental, occupational, or other definable classification of employees who are required under subdivision (2) to become members of the plan or who may under subdivision (3) elect whether to become members of the fund or plan may not take effect before January 2, 2016. A political subdivision may become a participant in the fund or the plan, or both, as applicable, if the ordinance or resolution is filed with and approved by the board.
(b) An ordinance or resolution adopted under subsection (a) that includes a provision described under subsection (a)(3) may also include one (1) of the following provisions:
(2) If an employee who may elect whether to become a member of the fund or a member of the plan does not make an election under IC 5-10.3-12-20.5 , the employee becomes a member of the fund.
If an ordinance or resolution adopted under subsection (a) that includes a provision described under subsection (a)(3) does not include either of the provisions described in subdivision (1) or (2), subdivision (2) applies to the departmental, occupational, or other definable classification of employees that may elect to become members of the fund or members of the plan.
(d) If an ordinance or resolution adopted under subsection (a) includes a provision described under subsection (a)(2) or (a)(3), or both, the ordinance or resolution must include a specification of the political subdivision's matching rate that is the percentage of each member's additional contributions to the plan that the political subdivision will match. A political subdivision may specify only:
(2) fifty percent (50%).
If a provision specifying the political subdivision's matching rate is not included in the ordinance or resolution, the political subdivision's matching rate for the plan is zero percent (0%).
(f) The effective date of participation is a date approved by the board, either a date suggested by the political subdivision or a date selected by the board, but the date may not be later than sixty (60) days after the date of approval. However, no retirement benefit may be paid until six (6) months after the effective date of participation.
As added by Acts 1977, P.L.53, SEC.3. Amended by P.L.60-1987, SEC.1; P.L.241-2015, SEC.12; P.L.179-2018, SEC.9.