- Spoliation generally refers to the destruction, alteration, or loss of evidence that is, or should reasonably be understood to be, relevant to an existing or reasonably anticipated dispute.
- The exact consequence is always within the court’s discretion and depends heavily on the specific facts.
- A genuine accident is treated more sympathetically than deliberate destruction, but it is not automatically a complete answer.
Sometimes evidence disappears innocently — an old laptop gets wiped before anyone realized it mattered, a shredding schedule ran on autopilot, a shared drive got cleaned out during an office move. Other times it looks a lot less innocent. Either way, when a party in an Ontario dispute is found to have destroyed or lost documents that mattered, spoliation of evidence can carry real consequences, even short of anyone proving it was done deliberately.
Spoliation is not usually its own standalone lawsuit — it typically surfaces as an issue inside an existing dispute, when one side accuses the other of destroying or losing something relevant. What happens next depends heavily on what was destroyed, when, and why.
This guide covers what spoliation generally means in Ontario civil litigation, the range of consequences a court can impose, and how to protect yourself if you’re accused of it, or if you’re the one who lost something.
What Counts as Spoliation
Spoliation generally refers to the destruction, alteration, or loss of evidence that is, or should reasonably be understood to be, relevant to an existing or reasonably anticipated dispute. It can happen through:
- Deliberate destruction to keep something out of a case
- Routine processes, such as auto-delete rules or standard document retention, that ran without being paused once a dispute became reasonably foreseeable
- Simple carelessness or oversight, without any intent to affect a case
- Loss of physical evidence, such as damaged property that gets discarded, repaired, or altered before it can be examined
Courts generally look at both what happened to the evidence and the state of mind behind it. Deliberate destruction is treated far more seriously than an honest oversight, though even unintentional loss can carry consequences.
What a Court Can Do About It
| Consequence | What it means |
|---|---|
| Adverse inference | The court assumes the missing evidence would have been unfavourable to the party who destroyed or lost it |
| Costs consequences | The party responsible may be ordered to bear some of the other side’s legal costs related to the issue |
| Evidentiary restrictions | The responsible party may be prevented from relying on related evidence or arguments |
| Striking pleadings (in serious cases) | In severe or deliberate cases, a court can strike out part or all of a party’s claim or defence |
| Separate liability | In some circumstances, spoliation can itself expose the responsible party to further consequences beyond the original dispute |
The exact consequence is always within the court’s discretion and depends heavily on the specific facts. There is no fixed penalty that automatically applies.
Why "It Was an Accident" Isn’t Always a Full Defence
A genuine accident is treated more sympathetically than deliberate destruction, but it is not automatically a complete answer. If a court finds that a party should have taken reasonable steps to preserve evidence — for example, by pausing routine deletion once a dispute was reasonably anticipated — carelessness in failing to do so can still lead to real consequences, even without any intent to hide anything.
This is exactly why putting a proper hold on relevant records early, once a dispute is on the horizon, matters so much: it is far easier to avoid a spoliation problem than to explain one after the fact.
If You’re Accused of Spoliation
- Do not destroy or alter anything further while the accusation is being sorted out.
- Gather a clear, honest account of what happened to the evidence in question and when.
- Identify whether the loss was truly accidental, tied to a routine process, or something else.
- Get legal advice before responding to the allegation — how you explain it matters.
- Be prepared for the possibility of some consequence, and focus on minimizing it rather than denying an issue exists if the loss is genuine.
If You Suspect the Other Side Destroyed Evidence
- [ ] Document exactly what you believe is missing and why you believe it existed
- [ ] Note any timeline suggesting when the dispute became reasonably foreseeable to the other side
- [ ] Raise the issue with your lawyer early rather than waiting until trial
- [ ] Understand that proving spoliation, and proving what the missing evidence would have shown, are two different challenges
Frequently asked questions
Can I get in trouble for spoliation even if I didn’t do it on purpose?
Yes, in some circumstances. If a court finds you should reasonably have preserved the evidence and failed to take basic steps to do so, carelessness alone can still lead to consequences, though generally less severe than deliberate destruction.
What if the missing evidence wasn’t actually that important to the case?
The significance of what was lost is central to how a court responds. Minor, peripheral evidence generally carries far less risk than something central to a key disputed issue, and this is exactly the kind of assessment a lawyer can help you make early.
Does spoliation only apply to documents, or physical evidence too?
It applies broadly to anything relevant that gets destroyed, altered, or lost, including physical evidence like damaged property, not just paper or electronic records.
If I suspect the other side destroyed evidence, do I need to prove it was deliberate?
Not necessarily. Some consequences can follow even from careless or accidental loss, though deliberate destruction generally leads to more serious consequences. Proving intent can strengthen your position but isn’t always required to raise the issue.
This is a litigation question
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