Wyoming Slip and Fall Laws: Proving Premises Liability

To win a slip-and-fall claim in Wyoming, you must prove the property owner was negligent, had actual or constructive notice of the hazard, and that the hazard caused your injury. Wyoming uses modified comparative fault under Wyo. Stat. Ann. section 1-1-109, which bars recovery if you are 51% or more at fault.

Proving a slip and fall claim in Wyoming

Wyoming premises liability law requires a property owner to exercise reasonable care to keep the property in a reasonably safe condition for those who enter it. When a hazardous condition causes a fall and injury, the injured person must establish four elements: the owner owed a duty of care, the owner breached that duty by failing to fix or warn of the hazard, the breach caused the fall, and the fall produced actual damages.

The most frequently disputed element is notice. You must show the owner had actual notice of the hazardous condition, meaning someone told the owner about it or the owner personally observed it, or constructive notice, meaning the condition had existed long enough that a reasonable inspection would have discovered it. Wyoming courts focus on how long the hazard had been present before the fall and whether the owner's inspection and maintenance practices were adequate.

Evidence supporting a notice argument includes prior complaint records, maintenance logs, surveillance footage showing how long the condition persisted, and testimony from employees or other visitors who saw the hazard before your fall. Photographs and a written record of conditions taken immediately after an incident are critical to building this case.

The open-and-obvious doctrine in Wyoming

Whether an open-and-obvious hazard sinks a premises liability claim in Wyoming depends on what kind of hazard it was. For natural conditions, the rule can end the case at the duty stage. In Valance v. VI-Doug, Inc., 2002 WY 113, 50 P.3d 697, the Wyoming Supreme Court stated that "the application of the natural accumulation rule and the open-and-obvious-danger exception determines whether the defendant has a duty," and it held that the exception reaches naturally occurring wind, so a restaurant owed no duty to protect a patron from the wind at its entrance. (The court let a separate claim proceed over the wording of a sign the restaurant had posted on that door, which was a condition the restaurant itself created.)

For hazards the owner created, obviousness is treated as a comparative-fault question instead. In Pinnacle Bank v. Villa, 2004 WY 150, 100 P.3d 1287, a Worland city ordinance imposed an affirmative duty to keep sidewalks clear, and the court agreed with both parties and the district court that the open-and-obvious-danger rule's only role in that case was to assess the pedestrian's comparative fault rather than to set the duty of care.

This approach was previewed in O'Donnell v. City of Casper, 696 P.2d 1278 (Wyo. 1985), which rejected using the obvious-danger rule to defeat duty for man-made hazards, holding that the obviousness of the condition goes to the plaintiff's comparative negligence rather than to the threshold question of whether any duty was owed.

Under this framework, if a man-made hazard was clearly visible, the jury may assign you a share of comparative fault for failing to notice or avoid it, and the landowner does not automatically escape liability by arguing the danger was obvious. Because Wyoming uses modified comparative fault with a 51% bar, a jury that finds you more than half responsible will eliminate your recovery, so the comparative-fault evaluation remains important. Where the condition was a natural one, the analysis is different: obviousness can defeat duty and end the claim before comparative fault is ever reached.

Ice, snow, and natural accumulation in Wyoming

Wyoming follows the natural-accumulation rule, and this is a significant limitation for ice-and-snow claims. The leading case is Paulson v. Andicoechea, 926 P.2d 955 (Wyo. 1996), in which the Wyoming Supreme Court held that a landowner/occupier owes no duty to remove naturally accumulated ice and snow from a parking lot. Under this rule, a fall caused by snow or ice that accumulated through weather conditions alone, without any action by the property owner, generally will not support a premises liability claim.

To recover after a fall on ice or snow in Wyoming, you must show an unnatural accumulation. This requires proving the defendant created or aggravated the hazardous condition, knew or should have known about it, and that it was substantially more dangerous than the natural accumulation in its original state. Examples of unnatural accumulations include drainage from a building that refreezes on a walkway, or melt water from a heated entryway that pools and freezes on a path the owner controls.

There is an important exception: a local snow-and-ice-removal ordinance can impose an affirmative duty that overrides the common-law no-duty rule. In Pinnacle Bank v. Villa, the Wyoming Supreme Court held that a Worland city ordinance requiring abutting property owners to clear sidewalks established a duty that controlled over the general natural-accumulation default. If you fell on a public sidewalk abutting private property, check whether the relevant municipality has such an ordinance, because its existence can transform a losing claim into a viable one.

How fault is shared: Wyoming's negligence rule

Wyoming uses modified comparative fault, codified at Wyo. Stat. Ann. section 1-1-109. Under this rule, your recovery depends on how the trier of fact divides fault between you and the defendant or defendants.

If your share of fault is 50% or less, you recover damages reduced by your percentage of fault. For example, if your total damages are $80,000 and the jury finds you 20% at fault, you receive $64,000. If you are found exactly 50% at fault, you still recover half your damages.

If your share of fault reaches 51% or more, you recover nothing. This is the critical threshold. Defense attorneys routinely argue that the plaintiff was wearing improper footwear, was distracted, or ignored visible warnings to push the plaintiff's fault share above 50%. An additional feature of Wyoming's rule is that liability among defendants is several only, meaning each defendant pays only its proportionate share of the total fault and is not responsible for another defendant's portion.

Wyoming does not use pure contributory negligence, so any fault on your part does not automatically end the claim. The 51% bar is the line that matters.

Deadlines: statute of limitations and government claims

The standard deadline for filing a personal-injury lawsuit in Wyoming is four years from the date of the fall, under Wyo. Stat. section 1-3-105(a)(iv)(C). The discovery rule may apply in cases where the injury was not immediately apparent, but the typical starting point is the date of the incident. Missing this deadline will result in dismissal regardless of the merits of your case.

If you were injured on property owned or operated by a Wyoming state or local government entity, begin with a question that comes before any deadline: whether the entity can be sued at all. Under Wyo. Stat. section 1-39-104(a), a governmental entity and its public employees acting within the scope of their duties "are granted immunity from liability for any tort except as provided by W.S. 1-39-105 through 1-39-112 and 1-39-122 through 1-39-124." That list of exceptions is exclusive. For a fall, the waiver that ordinarily matters is Wyo. Stat. section 1-39-106, which makes a governmental entity liable for bodily injury "caused by the negligence of public employees while acting within the scope of their duties in the operation or maintenance of any building, recreation area or public park."

That distinction decides many Wyoming cases before any paperwork does. A fall inside a public library, a county courthouse, a municipal recreation center, or a public park may come within section 1-39-106. A fall on a city street, or on a public sidewalk or parking area that is not part of a building, recreation area or park, may not fit any listed waiver, in which case the entity keeps its immunity and no notice of claim, however timely and however perfectly drafted, will revive the case. Identify the waiver that covers your fall before you invest in the claims process. If the fall was on government property, ask a Wyoming premises liability lawyer in a free consultation which waiver, if any, covers it before the sworn notice is filed (attorney advertising).

Where a waiver does apply, you then face a strict procedural requirement before you can file suit. Under the Wyoming Governmental Claims Act, Wyo. Stat. section 1-39-113, you must present a written, itemized notice of claim to the governmental entity within two years (730 days) of the date of the incident. This two-year presentment deadline is jurisdictional, meaning the court lacks authority to hear the case if you miss it. Even a timely, successful claim against a Wyoming governmental entity is subject to a separate cap: Wyo. Stat. section 1-39-118 limits the entity's total liability to $250,000 per person and $500,000 per occurrence, and bars punitive damages and pre-judgment interest against the entity.

The notice of claim must also comply with Article 16, Section 7 of the Wyoming Constitution: it must be signed by the claimant under oath, certifying under penalty of false swearing that the claim is true and accurate. Wyoming courts strictly enforce this certification requirement. After you file the notice of claim, you must bring suit within one year under Wyo. Stat. section 1-39-114.

For more on personal-injury filing deadlines in Wyoming, see the Wyoming statute of limitations page.

What a Wyoming slip and fall claim is worth

The value of a Wyoming slip-and-fall claim depends on your actual losses and on how the jury apportions fault. Economic damages include medical expenses (past and future), lost wages, reduced earning capacity, and the cost of ongoing treatment or rehabilitation. These are calculated from medical bills, pay stubs, and expert testimony regarding future care needs.

Non-economic damages cover pain and suffering, loss of enjoyment of life, and emotional distress. Wyoming does not impose a general statutory cap on non-economic damages in a claim against a private property owner, so juries have wide discretion in awarding these amounts. Claims against a Wyoming state, county, or municipal government are different in two ways. First, many are barred outright: Wyo. Stat. section 1-39-104(a) grants the entity immunity from tort liability unless a listed waiver applies, and for a fall that usually means section 1-39-106 (operation or maintenance of a building, recreation area or public park). Second, where a claim does survive, the Wyoming Governmental Claims Act caps a governmental entity's TOTAL liability at $250,000 per person and $500,000 per occurrence under Wyo. Stat. section 1-39-118, and bars punitive damages and pre-judgment interest against the entity entirely.

Because Wyoming uses modified comparative fault, your net recovery is reduced by your percentage of fault. A $150,000 award to someone found 25% at fault nets $112,500. If the jury assigns you 51% or more of the fault, the award is zero. The natural-accumulation rule also limits ice-and-snow claims significantly: unless you can show an unnatural condition the owner created or aggravated, or a local ordinance that imposed a duty to clear, those claims are unlikely to produce a recovery.

Use the Wyoming slip and fall settlement calculator to estimate how comparative fault and damages interact in your situation.

This article is general legal information, not legal advice. Premises liability law varies by state and changes, and case values depend on the specific facts. For advice about a specific fall, consult a licensed attorney in Wyoming.

Related: Slip and Fall Laws by State Hub | Wyoming Slip and Fall Settlement Calculator

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Frequently Asked Questions

How do I prove a slip and fall in Wyoming?

You must show the property owner owed a duty of reasonable care, breached it by failing to fix or warn of the hazard, had actual or constructive notice of the condition before your fall, and that the breach caused your injury and damages. Notice is typically the hardest element to prove: gather evidence of how long the condition existed and whether the owner knew or should have known about it.

Is Wyoming an open-and-obvious state?

It depends on the hazard. For man-made hazards, Wyoming treats the obvious nature of a danger as a comparative-fault question rather than a bar, so a jury may assign you some fault without the owner being automatically off the hook. For natural conditions such as ice, snow or wind, the rule is stronger: under Valance v. VI-Doug, Inc. (2002 WY 113), the open-and-obvious-danger exception determines whether the owner owed a duty at all, and it can defeat the claim outright. Pinnacle Bank v. Villa (2004 WY 150) limited obviousness to comparative fault, but that was a case in which a city ordinance had already imposed an affirmative duty to clear the sidewalk.

Can I sue for falling on ice or snow in Wyoming?

Generally no, unless you can show an unnatural accumulation. Wyoming follows the natural-accumulation rule (Paulson v. Andicoechea, 1996): property owners are not liable for falls on naturally accumulated ice or snow. To win, you must prove the defendant created or aggravated the hazardous condition and that it was substantially more dangerous than the natural state. One important exception: if a local ordinance required the owner to clear the area, that can create an affirmative duty that overrides the no-duty default.

How long do I have to file a slip and fall lawsuit in Wyoming?

Four years from the date of the fall under Wyo. Stat. section 1-3-105. If you were hurt on government property, first check whether the entity is immune at all: Wyo. Stat. section 1-39-104(a) grants immunity from tort liability except in the situations it lists, and for a fall the usual waiver is section 1-39-106, covering the operation or maintenance of any building, recreation area or public park. Where a waiver applies, you must present a written, oath-certified notice of claim to the government entity within two years (730 days) under the Wyoming Governmental Claims Act (Wyo. Stat. section 1-39-113). This presentment deadline is jurisdictional. After filing the notice of claim, you have one more year to bring suit. Both deadlines must be met.

Can I recover if I was partly at fault for my fall in Wyoming?

Yes, as long as your fault is 50% or less. Wyoming's modified comparative fault rule (Wyo. Stat. section 1-1-109) reduces your damages by your percentage of fault. If you are 30% at fault, you recover 70% of your damages. However, if the jury finds you 51% or more at fault, you recover nothing at all. Each defendant is liable only for its own proportionate share of fault.

How much is a Wyoming slip and fall claim worth?

It depends on your injuries, medical expenses, lost wages, and the jury's fault allocation. Wyoming has no statutory cap on non-economic damages against a private property owner, so pain-and-suffering awards vary widely. If your claim is against a Wyoming government entity, total liability is capped at $250,000 per person and $500,000 per occurrence under Wyo. Stat. section 1-39-118, with no punitive damages or pre-judgment interest allowed. Your recovery is reduced by your percentage of fault under Wyoming's modified comparative fault rule, and ice-and-snow claims face the additional hurdle of the natural-accumulation rule. Use the Wyoming slip and fall settlement calculator to model different scenarios.