Missouri Bill Would Make Party Hosts Liable for DUI Crashes

Overview

Missouri House Bill 3435 (HB3435), sponsored by Representative Cecelie Williams (R, District 111) and co-sponsored by Representative Mark Sharp (D, District 37), seeks to establish provisions relating to the liability of a social host. The bill was filed on February 25, 2026, and has a proposed effective date of August 28, 2026. The bill is currently under review by the House Crime and Public Safety Committee.

What Is Social Host Liability?

Social host liability refers to the legal responsibility of a person who hosts a gathering where alcohol is served for damages caused by intoxicated guests. Specifically, it can hold a host legally responsible if a guest they served alcohol to causes a DUI crash.

Missouri's Current Law

Currently, Missouri lacks a specific social host liability statute. This means that in the absence of HB3435, cases involving hosts and intoxicated guests are generally handled under common law negligence principles on a case-by-case basis.

The Bipartisan Push

A notable aspect of HB3435 is its bipartisan support. Representative Cecelie Williams, a Republican, is the primary sponsor, and Representative Mark Sharp, a Democrat, is a co-sponsor. This bipartisan collaboration suggests a shared concern regarding the issue of drunk driving and a desire to address it through legislation.

Legislative Status

House Bill 3435 was filed on February 25, 2026. On April 9, 2026, the bill was referred to the House Crime and Public Safety Committee. This means the bill is currently under review by the committee, which may hold hearings, amend the bill, and ultimately decide whether to send it to the full House for a vote.

What This Means for Missouri Hosts

If HB3435 becomes law, Missouri hosts could face legal repercussions if they serve alcohol to someone who then causes a DUI-related accident. While the specific provisions of the bill are still under consideration by the legislature, the general purpose is to establish social host liability. Therefore, Missouri residents who host parties where alcohol is served should be aware of the potential changes in the law and take precautions to prevent guests from driving under the influence.

How Missouri Compares

Currently, 39 states have some form of social host liability law in place. The passage of HB3435 would bring Missouri in line with the majority of states that have addressed this issue through legislation.

Source: LegiScan and Missouri House of Representatives official bill data.