If the State optionally excluded a class of positions from the retirement system coverage
group (see SL 30001.357) (or optionally excluded a class of positions from an absolute coverage group that
subsequently came under a retirement system) and the State later wishes to cover those
positions, then the positions constitute a separate retirement system for referendum
purposes. If the State optionally excluded "all classes" of the position involved,
then "all classes" of the position constitute the retirement system for referendum
purposes.
Example:
The State excluded all classes of part-time positions under a retirement system from
coverage under its Section 218 Agreement. If the State later decides to cover these
positions under its Agreement, all classes of part-time positions under the retirement
system would be treated as a separate retirement system for referendum purposes.
A State may not combine multiple distinct retirement systems for the purpose of conducting
a referendum. For example, the State could not hold a single referendum to expand
coverage to positions under a State retirement system and a political subdivision
retirement system that is not a part of the State system.