Establishes rules to govern contracts between contractors, subcontractors, and other parties to construction contracts

HB 3166 establishes payment rules for Missouri construction contracts involving contractors, subcontractors, and suppliers. It requires owners to pay contractors within 40 days of a valid invoice for completed work and bans contract terms that allow withholding payment for unrelated disputes, force continued work without payment, or require waiver of payment rights. The bill invalidates clauses that prevent contractors from suspending work for non-payment or that mandate out-of-state dispute resolution. It applies to all nongovernmental construction projects in Missouri, directly affecting owners, contractors, and subcontractors in payment disputes.