Waivers and Release Agreements in Ontario: Are They Enforceable?

A waiver and release is a contract in which one party agrees, in advance, not to sue the other for certain kinds of harm — usually in exchange for being allowed to take part in an activity, attend an event, or receive a service. They show up constantly in everyday life: before a gym membership, a ski hill day pass, a children’s birthday party at a trampoline park, a volunteer shift, or a one-off recreational outing like a zip-line tour or a charity run.

The underlying goal is risk allocation. Many activities carry some inherent risk even when run safely and responsibly, and a waiver is one way an organization shifts part of that risk back onto the participant, rather than carrying all of it as the operator. In exchange, the participant typically gets access to the activity on terms that assume they understood and accepted a defined set of risks before starting.

It’s worth being clear from the outset that a waiver is not a magic shield. It’s a contract like any other, and like the other agreements covered across our agreements hub, its enforceability depends heavily on how it was worded and how it was presented to the person signing it.

Waivers also commonly appear alongside a wider release of claims, where a participant agrees not to bring a claim not just for risks arising during the activity itself, but also for related matters such as the use of photos or video taken during the event, or incidental property damage. Reading the full scope of what’s actually being released, rather than assuming it only covers the headline activity, is worth doing before signing anything.

Ontario courts do enforce liability waivers, and they are a long-recognized part of how recreational, sporting, and service-based businesses manage risk. A waiver that is clearly written, genuinely understood by the signer, and reasonably connected to the actual activity being undertaken has a real chance of being upheld if it’s later challenged in court.

That said, “enforce” doesn’t mean courts treat every waiver as airtight. Because a waiver asks someone to give up a legal right before anything has even gone wrong, courts apply a level of scrutiny that goes beyond how they’d typically treat an ordinary commercial contract term. A court will look closely at the specific wording used, whether it plainly covers the type of incident that occurred, and whether the process around signing gave the person a genuine opportunity to understand what they were agreeing to.

This scrutiny tends to increase where the waiver is especially broad, where it was presented as an afterthought rather than a real part of the transaction, or where there’s a significant imbalance between the parties — for example, an individual consumer signing a standard waiver presented by a much larger commercial operator.

A central theme in how Ontario courts assess waivers is whether the terms were reasonably brought to the signer’s attention. A waiver that’s clearly presented as its own document, with a heading that signals its legal effect, in print that’s legible and not hidden among unrelated paperwork, is in a much stronger position than one buried in small print at the bottom of an unrelated form.

This matters even more where a clause is unusually broad or harsh relative to what a typical participant would expect. The more surprising or far-reaching a particular term is, the more clearly it generally needs to be flagged for the signer before it will be treated as something they truly agreed to. This is closely related to the same notice principle that comes up with standard form contracts more broadly, where fine-print surprises face extra scrutiny.

How a waiver is signed can matter too. A waiver that requires an active step, such as initialing specific clauses or checking a box confirming the person read the document, is generally in a better position than one where a signature is collected with no real indication the terms were ever reviewed.

Waivers have real limits. Ontario law generally does not allow a party to use a waiver to exclude liability for gross negligence, recklessness, or intentional wrongdoing — depending on the specific wording and the context, courts have been reluctant to let an operator avoid all consequences for conduct that goes well beyond ordinary carelessness. A waiver that tries to cover this kind of conduct too broadly risks being read down or struck entirely for the portions that overreach.

A waiver also can’t override a mandatory statutory protection that the law doesn’t allow parties to contract out of. Where consumer protection legislation applies to a transaction, for example, a waiver can’t simply erase rights that legislation guarantees regardless of what a signed document says.

Finally, a waiver only covers what it actually describes. A waiver drafted narrowly around a specific activity won’t necessarily extend to an unrelated incident that happened on the same premises, and vague, generic language is more likely to be read narrowly against the party that drafted it if there’s genuine ambiguity about what was meant to be covered.

It’s also worth noting that a waiver doesn’t change the underlying duty of care an operator owes to participants — it shifts who bears the legal consequence of certain risks materializing, but it doesn’t remove the incentive, or in many contexts the separate statutory obligation, to run the activity safely in the first place. A business that treats a signed waiver as a reason to relax genuine safety practices is relying on exactly the kind of conduct a waiver is least likely to protect against.

Waivers signed by a parent or guardian on behalf of a minor are treated with particular caution. A child generally can’t bind themselves to a waiver in the same way an adult can, and Ontario courts have shown reluctance to treat a parent’s signature as fully extinguishing the child’s own separate legal claim, since the parent is not the one giving up their own cause of action.

In practice, this means a business operating activities aimed at children should understand that a signed parental waiver, while still a useful and routine part of managing risk, may not provide the same degree of protection against a claim later brought on the child’s own behalf as an adult’s own signed waiver would provide for that adult.

This is one of the clearer illustrations of why a waiver is best understood as one part of a broader risk-management approach — alongside genuinely safe operating practices, appropriate supervision, and adequate insurance — rather than a standalone solution to liability exposure involving younger participants.

For an organization relying on waivers, clear and specific language tends to serve better than generic, one-size-fits-all boilerplate. Describing the actual activity, the categories of risk genuinely involved, and the particular rights being given up helps the waiver hold up to the scrutiny courts apply, and helps participants understand what they’re actually agreeing to.

For an individual being asked to sign one, it’s worth remembering that a waiver is a real contract, not a formality to skim past. Reading what risks are described, what rights are being given up, and asking questions about anything unclear is a reasonable step before signing, even where the activity feels routine or low-risk.

More broadly, our contract review checklist offers a useful general framework for approaching any document you’re asked to sign, waivers included, and our agreements hub covers several other agreement types that often work alongside a waiver in the same transaction or relationship.