Allows a fire protection district or fire protection territory to establish a merit system. Provides that unless a resolution or ordinance to establish a merit system is rejected not later than December 31, 2024, a merit system is established on January 1, 2025, for eligible: (1) city and town police and fire departments and township fire departments; and (2) fire protection districts and fire protection territories. Provides that the merit system may be dissolved after January 1, 2025. Requires a unit, district, or territory to vote to either retain or dissolve the merit system after January 1, 2029, and before January 31, 2029. Repeals a provision containing definitions and moves the definitions to another location.