2024 Iowa Code 231D.17 – Written contractual agreement required

2023 Iowa Code 231D.17 – Written contractual agreement required

2022 Iowa Code 231D.17 – Written contractual agreement required

2020 Iowa Code 231D.17 – Written contractual agreement required

2018 Iowa Code 231D.17 – Written contractual agreement required

2016 Iowa Code 231D.17 – Written contractual agreement required

2014 Iowa Code 231D.17 – Written contractual agreement required.

2009 Iowa Code 231D.17 – Written contractual agreement required