Modifies provisions relating to public labor organizations

HB 3283 modifies how public employee unions and government employers negotiate contracts. It requires both sides to bargain in good faith for wages, benefits, and working conditions, with a 180-day deadline to reach an agreement before mediation begins. If negotiations stall, the dispute moves to mediation (within 14 days) and then binding interest arbitration (within 90 days), with arbitrators selected from federal or private panels. The bill prohibits public employers from making unilateral changes to negotiated terms during bargaining and ensures arbitration decisions are binding, except for provisions requiring new laws. It directly affects public sector unions and government bodies across Missouri.