Your Drunk Guest Crashes on the Way Home: Are You Liable?

Probably not — but "probably" is doing about $100,000 worth of work in that sentence. In Childs v. Desormeaux (2006), the Supreme Court of Canada held that social hosts who merely host a party where alcohol is served are not liable to third parties injured by a drunk guest — and then left the door open for hosts who actively add to the risk. Between the exceptions and the cost of proving your innocence, "not liable" and "not sued" turn out to be very different things.

Here's the scenario, the law, and which policy stands between a lawsuit and your savings.

The scenario#

A composite of the claims Canadian insurers and defence lawyers actually see:

You host a backyard fortieth. Thirty guests, a cooler, a well-stocked bar cart, and one old friend who arrives thirsty and keeps refilling. Around midnight he waves off your half-hearted "you good to drive?" and leaves. Twenty minutes later he crosses the centre line and hits an oncoming car, seriously injuring the other driver — a stranger to you.

The injured driver's lawyer sues everyone in sight: your friend, his auto insurer, and you, the host who allegedly "supplied alcohol to a visibly intoxicated guest and permitted him to drive." Whether that allegation survives is a question for two years from now. The lawsuit starts today.

What the Supreme Court actually decided#

The leading case is Childs v. Desormeaux. Desmond Desormeaux left a New Year's Eve house party — a mostly bring-your-own-bottle affair — drove away impaired, and caused a head-on crash that killed one of his passengers and left a young woman, Zoe Childs, paralyzed. She sued the party's hosts.

The Supreme Court held the hosts were not liable. Hosting a party where alcohol is served or consumed does not, by itself, create a legal duty to the strangers your guest might hurt on the road. Guests are adults. They make their own choices, and the host is not their keeper.

But the Court was careful about what it wasn't deciding. It left room for liability where a host does something more — actively contributes to a guest's impairment, or knows about both the impairment and the risk and enables it anyway. Pouring drink after drink for someone who is visibly drunk, knowing they'll be driving home, is exactly the kind of conduct the Court flagged as a different case.

And commercial hosts were never protected at all. Bars, restaurants, and licensed venues are held to a higher standard, and Canadian courts have repeatedly found them liable for over-serving.

Who's on the hook, host by host#

Where social host liability still bites#

Three situations take you out of the safe harbour Childs built:

1. Serving the visibly impaired. The further you move from "guests poured their own" toward "I kept handing him doubles after he was slurring, then watched him fish out his keys," the closer you get to the door the Court left open. Knowledge plus active contribution is the dangerous combination.
2. Minors. Host a teen party where alcohol flows and the calculus changes completely. Courts are far more willing to impose a duty on adults who supply alcohol to underage drinkers — or who simply let it happen on their watch.
3. Work parties. An employer occupies a middle ground between social and commercial host, with the power to control the event and the employee. In Jacobsen v. Nike Canada Ltd. (1996 CanLII 3429, BCSC), an employer that supplied beer to an employee during a long workday was found 75% liable after he drove away and was catastrophically injured. If you're the boss and the bar is open, you carry more duty than the neighbour hosting a barbecue.

Why "probably not liable" still costs six figures#

Here's the part the Childs headline hides: a defence is not a force field. Plaintiff lawyers name every defendant who might carry insurance, because a catastrophically injured victim needs every available limit. You get named, you get served, and you have to respond — winning comes later, and it isn't free.

Estimates based on typical Canadian litigation costs — every case differs, and these are not quotes.

Most social host claims against ordinary hosts end in dismissal or a modest settlement. But the road there runs through years of the process above. The single most valuable thing your insurance does in this scenario isn't paying a judgment — it's paying the lawyers.

Which policy defends you — and where it stops#

The personal liability section of a standard Canadian homeowner, condo, or tenant policy is the one that answers a social host claim. It typically does two things:

1. Defends you. The insurer appoints and pays defence counsel from the first letter, usually in addition to your policy limit. For a claim that's likely to be beaten, this is most of the value.
2. Pays a settlement or judgment up to your liability limit — commonly $1 million, sometimes still $500,000 on older policies.

Where it stops is the uncomfortable part. An impaired-driving crash is precisely the fact pattern behind Canada's largest injury awards — catastrophic brain and spinal injuries with lifetime care costs have produced judgments well past $10 million. If a court ever did find you partly liable for a crash like that, a $1 million limit is a rounding error, and once the limit is paid out, the insurer's duty to defend generally ends. Several injured people in one car share that single limit, too.

How umbrella coverage changes the outcome#

A personal umbrella policy adds $1 million to $10 million above your home policy — for a typical Canadian household, roughly $200–$300 per year for the first $1 million and about $50–$75 per additional $1 million (estimates based on typical broker pricing, not quotes). In this scenario it does three things:

1. Multiplies the limit standing between a catastrophic claim and your house.
2. Keeps funding your defence after the base policy's limit is exhausted.
3. Covers the same hosting risk at the cottage, the campsite, and the rented hall — it follows you, not your address.

For the price of one case of decent wine a year, the worst night of your life stops being a threat to the next twenty years of it.

The bottom line#

Childs v. Desormeaux means that merely hosting doesn't make you liable when a guest drives drunk. It does not stop anyone from suing you, it doesn't protect the host who kept pouring for someone visibly hammered, and it offers little cover when teenagers are drinking. So do the host things: take keys, call rides, close the bar early. Then check the number on your liability page — because if the worst happens anyway, that number is what funds your defence, and what stands between a stranger's tragedy and your equity.