In many states a social host—including the guest’s employer—who does not charge an adult guest—18 years or older in some states and 21 years or older in other states—for alcoholic drinks and who does not serve the beverages under the authority of a license or permit—is not liable for the guest’s actions or injuries to himself or others.

But in most states an adult social host is liable for personal injuries and property damage caused by a minor to whom the social host provides or furnishes alcoholic beverages—especially if the social host knew or should have known the minor would drive a motor vehicle under the influence or if the minor was obviously intoxicated when the social host provided or furnished alcoholic beverages.

Laws regarding social host liability vary from state to state and are usually located in a state’s statutes.

In Missouri, social host liability is somewhat limited compared to other states. Missouri does not impose liability on social hosts for the actions of their adult guests in most situations. This means that if a social host provides alcohol to an adult guest without charge and without a license or permit, they generally will not be held liable for injuries or damages caused by that guest once they leave the premises. However, when it comes to minors, the law is stricter. Missouri law does hold social hosts liable if they knowingly provide alcohol to a person under the age of 21, and that minor subsequently causes injury or property damage. This is particularly the case if the social host knew or should have known that the minor would be driving a vehicle or if the minor was visibly intoxicated. It's important to note that these laws can be subject to change and may vary based on specific circumstances, so consulting with an attorney for the most current and applicable advice is recommended.