Slip and Fall Liability for Ontario Property Owners: What You Need to Know

A single slip on icy pavement in front of your property can turn into a lawsuit. In Ontario, property owners and occupiers have a legal duty to keep their premises reasonably safe — and that duty doesn't pause for winter. Understanding how slip-and-fall liability works, and what the law now requires, is the first step to protecting yourself. This guide breaks down Ontario's rules, the critical notice deadlines, and how proper snow and ice management limits your risk.

Your Legal Duty Under the Occupiers' Liability Act

Ontario's Occupiers' Liability Act requires anyone who controls a property — owner, landlord, business operator, or property manager — to take reasonable care to keep people on the premises reasonably safe. In winter, that means reasonable efforts to clear snow and treat ice on the surfaces people use: walkways, entrances, parking lots, and stairs.

The standard is reasonableness, not perfection. You're not expected to guarantee that no one ever slips; you're expected to act reasonably to address known and foreseeable winter hazards. The key question after an incident is always whether you took reasonable steps — and whether you can prove it.

The 60-Day Notice Rule for Snow and Ice

A significant change in Ontario law affects slip-and-fall claims involving snow and ice. Under amendments to the Occupiers' Liability Act, a person injured by snow or ice must give written notice of the claim — including the date, time, and location of the incident — within 60 days to the occupier and to any independent contractor responsible for winter maintenance. Notice must generally be delivered personally or by registered mail.

This is a meaningful protection for property owners and their snow contractors, but it cuts both ways. As an owner, if you receive such a notice, you must act on it immediately — preserve your maintenance records, photograph conditions, and notify your insurer and contractor right away.

Who's Responsible for the Public Sidewalk?

In many Waterloo Region municipalities, the by-law places responsibility for clearing the public sidewalk adjacent to a property on the property owner, typically within a set number of hours after snowfall stops. Kitchener, Waterloo, and Cambridge each have their own sidewalk-clearing by-laws and timelines, and failing to comply can bring fines — and strengthen a liability claim if someone falls. Check your municipality's specific by-law, because the deadlines and enforcement differ.

How a Snow Contractor Shifts and Shares Risk

Hiring a professional, insured snow contractor does two important things for your liability exposure. First, a competent contractor reduces the chance of an incident in the first place through timely, consistent clearing and treatment. Second, a properly structured contract can allocate responsibility and bring the contractor's own commercial general liability insurance into the picture.

• Confirm the contractor carries adequate commercial general liability insurance and request a certificate.
• Confirm their crew is WSIB-registered, so a worker injury on your site doesn't become your problem.
• Ensure the contract clearly defines scope, response times, and which surfaces are covered.

Note that hiring a contractor doesn't fully erase your duty as the occupier — you remain responsible for ensuring reasonable care is taken — but it strengthens your position significantly.

Documentation Wins Slip-and-Fall Cases

Because the legal standard is reasonableness, the winner of a slip-and-fall dispute is usually whoever has the better records. Time-stamped service logs showing when surfaces were cleared and salted, weather records for the day in question, and photos of conditions are the difference between proving you acted reasonably and having only your word.

• Keep dated, time-stamped logs of every clearing and salting visit.
• Retain weather data for storm days to show conditions and your response.
• Photograph cleared surfaces after service when conditions are severe.
• Keep these records for several years — claims can surface long after the incident.

Commercial Properties Face Higher Exposure

The same legal duty applies to homeowners and businesses, but the exposure is very different. A commercial property — a retail plaza, office building, restaurant, or apartment complex — has far more foot traffic, more surfaces to maintain, and visitors who are explicitly invited onto the premises to do business. Courts hold commercial occupiers to a practical standard that reflects this: a business open to the public is expected to have a systematic, documented winter maintenance program, not occasional ad-hoc clearing.

For commercial owners and property managers in Kitchener-Waterloo, this means a professional snow contract with defined response times, priority clearing of entrances and accessible routes, regular monitoring through freeze-thaw conditions, and meticulous record-keeping. The cost of a slip-and-fall settlement — plus increased insurance premiums afterward — dwarfs the cost of reliable, documented winter maintenance. Treating snow and ice management as a core risk-control function, not an afterthought, is simply good business.

Landlords, Tenants, and Who Clears What

In rental and multi-tenant situations, responsibility for snow and ice clearing is often unclear — and that ambiguity is itself a liability. For residential rentals, the lease should spell out whether the landlord or tenant is responsible for clearing the driveway, walkways, and any adjacent public sidewalk. For commercial leases, common areas, parking lots, and individual unit entrances may fall to different parties. When responsibility isn't clearly assigned in writing, an injured person can pursue everyone with a connection to the property, and the parties end up fighting over who should have acted. Resolve this in the lease before winter, confirm whoever is responsible actually has the means and a contractor to do it, and keep that documentation on file.

Practical Steps to Reduce Your Risk

Beyond hiring help and keeping records, a few habits meaningfully lower your exposure:

• Treat surfaces proactively before freezing rain and overnight refreeze, not just after snowfall.
• Pay special attention to high-traffic and high-risk spots: entrances, stairs, ramps, and shaded walkways.
• Address black ice during freeze-thaw stretches, when the worst hazards form on days with no snow.
• Respond to any incident or notice immediately by preserving evidence and notifying your insurer.

For Kitchener-Waterloo property owners, consistent, documented winter maintenance is both the safest and the most defensible approach.