Slip and fall claims in California

A slip is a loss of traction — the foot goes forward and the body goes back, which is why these falls produce wrist, hip, and head injuries so reliably. It is a different mechanism from a trip, and it is proved differently. This is general information, not legal advice.

What has to be shown

That the defendant owned, leased, occupied, or controlled the property; that they were negligent in its use or maintenance; that you were harmed; and that the negligence was a substantial factor in causing the harm.

In a slip case the contested element is almost always the second, and within it, notice: did they create the hazard, know about it, or should they have found it. That element has its own page — notice and inspection — and it is the one to read alongside this.

Sources: CACI No. 1000 (premises liability — essential factual elements), Judicial Council of California Civil Jury Instructions (2026 edition); Civ. Code, § 1714(a) (general duty of ordinary care); Rowland v. Christian (1968) 69 Cal.2d 108.

The recurring sources

• Spills. The classic. Everything turns on how long it was there — see the timing evidence on the notice page.
• Freshly mopped or waxed floors. Here the business created the condition, so notice is not the issue. The issue is the warning and whether the area was closed off.
• Tracked-in rain. Entrances on wet days are foreseeable and businesses are expected to plan for them — matting, more frequent attention, and warnings.
• Leaking refrigeration, ice machines, and displays. Recurring leaks are the strongest version of these claims, because the maintenance history shows the problem was known.
• The surface itself. A polish or finish unsuited to a wet area, or flooring material that is slick when damp.
• Transitions. The point where one flooring type meets another, especially between a wet zone and a dry one.

Warnings have to actually warn

The wet floor sign is the first thing a defence points to, and its mere existence is not the answer. What matters is whether the warning was adequate: whether it was positioned where someone approaching would see it in time, whether it covered the area where you actually fell, whether it was visible from your direction of travel, and whether the hazard warranted closing the area rather than signing it.

There is also a point that cuts the other way. Where signs are left out permanently as a general precaution, they stop conveying information about any particular hazard — and a business that has trained its customers to ignore its signs has a weaker argument that this one was an adequate warning.

The slip-resistance argument

Where the surface itself is in issue, an expert measure of slip resistance — the coefficient of friction, wet and dry — can convert a claim about one spill into a claim about a condition. It matters where the flooring was unsuitable for a wet area, where a polish or finish reduced traction, or where a surface was maintained in a way that made it slicker than the manufacturer intended.

It requires the surface to be tested in the condition it was in, which is another reason speed matters: floors get refinished.

Footwear, and the comparative fault argument

Expect to be asked what you were wearing. It is a comparative fault argument, not a defence, and wearing ordinary shoes is not negligence. Where footwear does carry some weight, California reduces the recovery by the claimant's percentage rather than barring it, with no cutoff.

Two practical points. Keep the shoes — their sole condition is evidence in both directions and they are usually thrown away. And expect the same treatment for distraction: a defence that you were looking at a phone, or at a display, is the same kind of argument and gets the same answer.

Comparative fault · what if I was partly at fault.

The first hour

• Photograph the substance before anyone cleans it — close, with the surrounding floor and any tracking.
• Photograph the whole area, from your direction of approach, showing signs or their absence.
• Report it and ask for an incident report; ask for a copy.
• Get names of any employee who responded and any witness.
• Ask in writing, the same day, that surveillance footage be preserved — including the hour before.
• Keep the shoes and the clothes, unwashed.
• Get medical attention promptly.

Common questions

Is a wet floor automatically the owner’s fault?

No. The question is whether they created the hazard, knew about it, or should have found it in time. A spill made by another customer thirty seconds earlier is usually not a failure of reasonable care. One that sat for an hour is a different case.

There was a wet floor sign. Does that end it?

Not by itself. A warning has to be adequate — placed where an approaching person would see it in time, covering the actual area, and removed when no longer true. Signs left out permanently as a precaution arguably warn of nothing, and that argument runs both ways.

They say my shoes were the problem.

Standard, and it is a comparative fault argument rather than a defence. Wearing ordinary footwear is not negligence. Where it does carry weight, it reduces a recovery by a percentage rather than barring it.

What is the coefficient of friction argument?

An expert measure of how slip-resistant a surface is, wet and dry. It matters where the flooring material or its maintenance — the wrong polish, a finish unsuited to a wet area — made a surface more slippery than it should have been. It moves the case from a one-off spill to a condition.