Versions of See prior versions of a law on LawServer 2024 Missouri Laws 115.641 – Failure to perform a duty under this chapter a class four offense — exceptions 2023 Missouri Laws 115.641 – Failure to perform a duty under this chapter a class four offense — exceptions 2022 Missouri Laws 115.641 – Failure to perform a duty under this chapter a class four offense — exceptions. 2020 Missouri Laws 115.641 – Failure to perform a duty under this chapter a class four offense — exceptions. 2016 Missouri Laws 115.641 – Failure to perform a duty under sections 115.001 to 115.641 and sections 51.450 and 51.460 a class four offense–exceptions 2015 Missouri Laws 115.641 – Failure to perform a duty under sections 115.001 to 115.641 and sections 51.450 and 51.460 a class four offense–exceptions 2014 Missouri Laws 115.641 – Failure to perform a duty under sections 115.001 to 115.641 and sections 51.450 and 51.460 a class four offense–exceptions 2013 Missouri Laws 115.641 – Failure to perform a duty under sections 115.001 to 115.641 and sections 51.450 and 51.460 a class four offense–exceptions 2009 Missouri Laws 115.641 – Failure to perform a duty under sections 115.001 to 115.641 and sections 51.450 …