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 Colorado, social host liability is somewhat limited compared to other states. Under Colorado law, a social host who provides alcohol to a person of legal drinking age (21 or older) is generally not liable for damages or injuries caused by the intoxicated guest. This means that if an adult guest becomes intoxicated at a social gathering and subsequently causes harm to themselves or others, the host typically cannot be held responsible. However, Colorado does impose liability on social hosts in situations involving minors. If a social host knowingly provides alcohol to someone under the age of 21, and that minor subsequently causes injury or property damage, the host can be held liable. This is particularly the case if the host knew or should have known that the minor would be driving a vehicle while under the influence. It's important to note that these laws can be complex and subject to interpretation by courts, so it is advisable to consult with an attorney for specific legal guidance.