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Bar, nightclub and event venue assaultsWhat the staff saw coming matters.

A bar, nightclub or event venue in California can be responsible for an assault by another guest when it could reasonably anticipate the attack and did not take reasonable steps. The clearest cases show staff who saw trouble building and did little about it. Serving the attacker alcohol is not, by itself, the basis for the claim.

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Josh Kohanim, Esq.Written and reviewed by Josh Kohanim, Esq., California Bar No. 328609 · Published · Reviewed

In this guide

This page was checked against the statutes, the 2026 jury instructions and the cases it cites on November 11, 2026. It is one of the guides on our negligent security page, which covers crimes on property that an owner or business could have prevented. Every case depends on its own facts, and nothing here predicts the result of any one claim.

The rule for bars and venues

California's jury instruction on crime on property, CACI No. 1005 (2026 edition), says that a landlord or the owner of a business open to the public "must use reasonable care to protect" tenants, guests or patrons "from another person's criminal conduct on" the property "if the [owner/landlord] can reasonably anticipate that conduct." Whether that duty exists is decided by the judge; whether the steps the owner took were "adequate and reasonable under the circumstances" is decided by the jury.

A bar, nightclub, concert hall or stadium is a business open to the public, so the same instruction applies to it. The California Supreme Court calls the duty a bar owes its patrons a "special-relationship-based duty" (Delgado v. Trax Bar & Grill (2005) 36 Cal.4th 224). The duty is reasonable care. A venue is not responsible for every fight on its property.

The visible build-up

In Delgado v. Trax Bar & Grill (2005), the bar's security guard saw that a group was likely to attack a patron and told the patron to leave. The group followed him into the parking lot. The California Supreme Court held that even a bar with no duty to hire more guards owes a "duty to respond to events unfolding in its presence by undertaking reasonable, relatively simple, and minimally burdensome measures." Because the bar "had actual notice of an impending assault," its duty included an obligation "to take reasonable, relatively simple, and minimally burdensome steps to attempt to avert that danger." The Court sent the case back on breach and causation. Staff who watched a threat build are at the center of these cases.

Guards and prior incidents

A bar does not have to hire security guards in every case. Under Delgado, as quoted in CACI No. 1005, guards are part of a business's duty only with "heightened" foreseeability. That is foreseeability "shown by prior similar incidents or other indications of a reasonably foreseeable risk of violent criminal assaults in that location." Foreseeability means how predictable the attack was from what the business knew. The Supreme Court said earlier that this level of foreseeability "rarely, if ever, can be proven in the absence of prior similar incidents of violent crime on the landowner's premises" (Ann M. v. Pacific Plaza Shopping Center (1993) 6 Cal.4th 666). Earlier fights at the same venue are the usual proof that guards were owed.

Measures and the notice required

California courts weigh how burdensome a safety measure is against how foreseeable the attack was. Each row below pairs a measure with the notice the cases describe.

Security measures at a bar or venue, and the notice California cases require for each
MeasureHow courts describe the burdenNotice usually neededAuthority
Hiring or posting security guards at a bar or venueRarely, if ever, a minimal burdenHeightened foreseeability, such as prior similar violent incidents at that locationAnn M. (1993); Delgado (2005)
Responding to a fight forming in front of bar staff: separating people, warning, calling 911Reasonable, relatively simple and minimally burdensomeActual notice of an impending or ongoing assaultDelgado (2005); Morris v. De La Torre (2005)
Physically rescuing a patron from an attackerNot required of employeesNot a duty, even with noticeMorris v. De La Torre (2005), footnote 5

Limits of the staff's duty

Bar and venue staff do not have to fight an attacker. In Morris v. De La Torre (2005), decided the same day as Delgado, the California Supreme Court said employees "have, at most, a duty" to "warn, to call 911, or to take other similar minimal action." The Court also said there is no "absolute obligation to call 911", because a call can sometimes make things more dangerous. The question for a jury is whether the staff's response was reasonable for what they saw, and whether a different response would have prevented the attack or reduced the injury. The lower the cost of a step, the less warning a venue needs before it must take that step.

Bouncers and security staff

Bouncers matter to a bar assault claim in two ways. First, they are often the employees who see a fight coming, as in Delgado, so what they saw, said and did is the core evidence of the venue's response. Second, a bouncer can be the person who causes the injury. California's jury instruction on an employer's responsibility, CACI No. 3722, says an employee's "wrongful or criminal conduct may be within the scope of employment even if it breaks a company rule or does not benefit the employer." A separate route is negligent hiring: "The employer of a security guard may be [liable] for the guard's assaults if the employer negligently hired the guard or negligently placed him in a position to commit foreseeable harmful acts" (Hawkins v. Wilton (2006) 144 Cal.App.4th 936). Our guide to security guard and security company liability covers contract guards and guard violence.

Fights in the venue's parking lot

A bar's responsibility for a fight in its parking lot depends first on control, and the attack in Delgado happened in the lot. California's premises instruction, CACI No. 1000, covers a defendant that "owned/leased/occupied/controlled" the property, and "control alone is sufficient" (Alcaraz v. Vece (1997) 14 Cal.4th 1149, as quoted in CACI No. 1000). A lot shared with other businesses or run by a parking company can add defendants.

Notice still matters outside. A Court of Appeal said that "Knowing there is a general potential for rowdy or troublesome conduct by bar patrons, however, does not make the category of aggressive parking lot assaults reasonably foreseeable" (Williams v. Fremont Corners, Inc. (2019) 37 Cal.App.5th 654, as quoted in CACI No. 1005). A threat made inside, or a group the staff saw waiting outside, carries more weight. Our guide to parking garage and parking lot attacks goes further.

Stadiums and concerts

Stadiums, arenas and concert venues owe the same reasonable care as any business open to the public, and causation is usually the hardest part of these cases. Causation means proof that a missing security step more likely than not would have prevented the attack or reduced the harm. In Stokes v. Forty Niners Stadium Management Co., LLC (2025), a fan was punched twice in a stadium parking lot after a game. The Court of Appeal, in a published decision, found "no substantial, nonspeculative evidence" that the stadium manager or the event staffing company caused the injury. It quoted an earlier Coliseum case: "the bare claim that more security personnel could have prevented a criminal attack shows only 'abstract negligence'" (Romero v. Los Angeles Rams (2023) 91 Cal.App.5th 562, as quoted in Stokes).

Alcohol and the attacker

California law generally does not make a bar liable just because it served the person who attacked you. Civil Code section 1714(b) declares that "the furnishing of alcoholic beverages is not the proximate cause of injuries resulting from intoxication, but rather the consumption of alcoholic beverages is the proximate cause." Business and Professions Code section 25602 takes the same approach for anyone who sells alcohol. A bar assault claim therefore rests on security and on the staff's response to a threat they saw or were told about, not on the drinks.

The attacker's share of fault

In California, a jury can assign part of the fault to the attacker. Each defendant pays only its own share of noneconomic damages, such as pain and emotional distress (Civil Code section 1431.2), and a Court of Appeal has applied that rule to a bar whose patron was assaulted by a third person (Weidenfeller v. Star & Garter (1991) 1 Cal.App.4th 1). Economic damages, such as medical bills and lost earnings, are not divided this way.

In Weidenfeller, the jury put 75 percent of the fault on the assailant, 20 percent on the bar and 5 percent on the injured patron. A jury can also weigh the injured person's own conduct, including drinking, when it divides fault. Our guide to when the attacker is mostly at fault explains the arithmetic.

Possible defendants

When someone is attacked on property in California, the people who may be responsible include the property owner, the property management company, the security company and any business that controlled the area. Each may have its own liability insurance. California requires every licensed private patrol operator to keep commercial general liability insurance of at least $1,000,000 for any one loss or occurrence (Business and Professions Code section 7583.40). Whether a policy pays for a particular attack depends on its terms, so the policies must be obtained and read.

At a bar, club or event, the list can include the company that holds the liquor license, the building's landlord, an event promoter that rented the space, an outside security contractor and the attacker. What each one controlled and knew that night decides whether it shares responsibility.

Insurance at bars and clubs

Some liability policies exclude claims based on an assault or battery, and some limit them to a smaller amount. A California Court of Appeal held that such an exclusion applied "no matter who commits" the assault and whatever legal theory the injured person uses (Century Transit Systems, Inc. v. American Empire Surplus Lines Insurance Co. (1996) 42 Cal.App.4th 121). Identifying every policy, including policies held by a security company or a management company, is part of the early work in these cases.

Assault-and-battery exclusions are common at bars. A 2025 trade article for insurance agents said that "With many liquor liability policies, you need to specifically request the addition of assault and battery coverage, otherwise, there is an automatic exclusion" (IndependentAgent.com, May 7, 2025). A bar can be at fault and still have little insurance for an assault. Our guide to insurance and who pays goes further.

Evidence to protect early

Video and staff records from a bar or venue can disappear quickly. No California statute we found requires a private business to keep camera footage for a set time, so the owner's system settings decide. A city department may destroy recordings of telephone and radio communications after 100 days (Government Code section 34090.6), and county departments have a parallel rule (section 26202.6). State guidance says police body camera video that is not evidence "should be retained for a minimum of 60 days" (Penal Code section 832.18).

The venue records that matter include inside and parking lot video, incident reports, that night's staff schedule, security post orders, ejection logs and earlier reports of fights there. A written preservation letter asks each company to keep them, and our negligent security evidence checklist lists who holds each record. Do not contact the attacker or the staff yourself.

Filing deadlines

Most California injury lawsuits must be filed within two years of the injury (Code of Civil Procedure section 335.1). Some claims have more time, including claims based on a sexual assault, and some have less, including claims against a public entity. Our negligent security deadlines guide lists each one, and the deadline calculator gives a starting estimate. A lawyer should confirm the dates in any one case.

If the attack at a bar or club was a sexual assault, our guide to sexual assault on someone else's property explains the longer periods. If someone died, our wrongful death page explains who can bring the claim. General premises law, such as falls at a venue, is on our premises liability page.

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Sources cited

Frequently asked questions

Can I sue a bar if another customer attacked me in California?
Yes, a bar can be responsible when it could reasonably anticipate the attack and did not take reasonable steps (CACI No. 1005). The California Supreme Court held in Delgado v. Trax Bar & Grill (2005) that a bar whose staff saw an assault coming had to take reasonable, relatively simple and minimally burdensome steps to try to prevent it. The attacker can be sued as well.
Is a bar responsible because it kept serving the person who hit me?
Not on that basis alone. Civil Code section 1714(b) and Business and Professions Code section 25602 treat drinking, not serving, as the legal cause of harm done by an intoxicated person. A claim against a bar rests instead on its security and on how its staff responded to a threat they saw or were told about before the attack.
Can a nightclub be sued if a bouncer hurt me?
It can be. The jury instruction on an employer's responsibility, CACI No. 3722, says an employee's wrongful or criminal conduct may be within the scope of employment even if it breaks a company rule. A club can also be responsible for hiring or placing a guard it should not have (Hawkins v. Wilton (2006)). If the bouncer worked for a security company, that company may be responsible too.
Is a bar liable for a fight in its parking lot after closing?
It depends on who controlled the lot and what the staff knew. A Court of Appeal said a general awareness of rowdy bar patrons does not by itself make aggressive parking lot assaults foreseeable (Williams v. Fremont Corners, Inc. (2019), as quoted in CACI No. 1005). A threat made inside the bar, or a group the staff saw waiting outside, is different.
Does a bar or club have to have security guards?
Not always. Guards are part of a business's duty only with heightened foreseeability, shown by prior similar incidents or other signs of a foreseeable risk of violent assault at that location (Delgado v. Trax Bar & Grill (2005), as quoted in CACI No. 1005). A venue with no duty to hire guards must still respond with simple steps to a fight forming in front of its staff.
What if I had been drinking too?
A jury can assign part of the fault to the injured person, and that share reduces the recovery. In Weidenfeller v. Star & Garter (1991), the jury put 5 percent of the fault on the injured patron, 20 percent on the bar and 75 percent on the attacker. Having had drinks does not by itself defeat a claim against a venue whose staff ignored a visible threat.
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