2024 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2023 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2022 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2020 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2019 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2017 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2016 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2015 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2014 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2013 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1

2009 Michigan Laws 38.2666 – Participation in Tier 2; crediting years of service accrued under Tier 1