2023 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2022 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2021 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2019 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2016 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2014 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost

2009 North Dakota Code 40-45-15 – Right to retirement once acquired cannot be lost