In the absence of a relationship between the parties giving rise to the right of control, one person is under no legal duty to control the conduct of another, even if there exists the practical ability to do so.
Houston Moos consumed alcohol at a party hosted by the Graffs and Hausmons, and allegedly left in his vehicle in an intoxicated condition. En route from the party, Moos collided with a motorcycle, injuring Brett Beard. Beard sued both Moos and his hosts for his injuries. The trial court ultimately dismissed Beard's claims against the hosts for failure to state a cause of action. An en banc divided court of appeals reversed the trial court's judgment and remanded the case, holding for the first time in Texas jurisprudence that social hosts may be liable to third parties for the acts of their intoxicated adult guests. Under the court of appeals' standard, a social host violates a legal duty to third parties when the host makes an alcoholic beverage available to an adult guest who the host knows is intoxicated and will be driving. In practical effect, this duty is twofold. The first aspect of the host's duty is to prevent guests who will be driving from becoming intoxicated. If the host fails to do so, however, a second aspect of the duty comes into play -- the host must prevent the intoxicated guest from driving.
Does a host acquire liability for any misconduct or negligence of an intoxicated guest?
Ideally, guests will drink responsibly, and hosts will monitor their social functions to reduce the likelihood of intoxication. Once a guest becomes impaired by alcohol to the point at which he becomes a threat to himself and others, we would hope that the host can persuade the guest to take public transportation, stay on the premises, or be transported home by an unimpaired driver. But we know that too often reality conflicts with ideal behavior. And, given the ultimate power of guests to control their own alcohol consumption and the absence of any legal right of the host to control the guest, we find the arguments for shifting legal responsibility from the guest to the host, who merely makes alcohol available at social gatherings, unconvincing. As the common law has long recognized, the imbiber maintains the ultimate power and thus the obligation to control his own behavior: to decide to drink or not to drink, to drive or not to drive. We therefore conclude that the common law's focus should remain on the drinker as the person primarily responsible for his own behavior and best able to avoid the foreseeable risks of that behavior.