Me. Rev. Stat. tit. 5, § 17712-A

Notwithstanding section 17712, an employee of the Maine State Prison who holds a position described in section 17851, subsection 11 and who is hired after July 1, 1992 shall contribute to the State Employee and Teacher Retirement Program at a rate of 1% of earnable compensation in addition to the contribution required under section 17712.