2024 Michigan Laws 16.102 – Head of department defined

2023 Michigan Laws 16.102 – Head of department defined

2022 Michigan Laws 16.102 – Head of department defined

2020 Michigan Laws 16.102 – Head of department defined

2019 Michigan Laws 16.102 – Head of department defined

2017 Michigan Laws 16.102 – Head of department defined

2016 Michigan Laws 16.102 – Head of department defined

2015 Michigan Laws 16.102 – Head of department defined

2014 Michigan Laws 16.102 – Head of department defined

2013 Michigan Laws 16.102 – Head of department defined

2009 Michigan Laws 16.102 – Head of department defined