How Ontario employers can spot WSIB claim fraud before it costs them

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Most workplace injury claims in Ontario are exactly what they look like. Someone got hurt on the job and needs time to recover. An employer who starts from suspicion damages trust and may land in legal trouble.

Still, WSIB claim fraud does happen, and the employer often notices something is off first. This guide covers what to watch for, what you are allowed to do, and when to bring in a licensed investigator.

Start with your own obligations

The WSIB is clear that employers must report a workplace injury or illness within three business days of learning about it when the worker needs health care, misses work, earns less than regular pay, or needs modified work at regular pay for more than seven calendar days. You report even if you doubt the injury is work related. The WSIB decides that question, not you.

Discouraging a worker from reporting is itself an offence. A questionable claim is handled through evidence and the proper process, never by pressure.

You also have return to work duties. According to the WSIB’s return to work responsibilities, employers should contact the injured worker early, stay in touch through recovery, try to offer suitable work that is safe and within the worker’s functional abilities, and give the WSIB the information it asks for. A documented, good faith return to work offer is also your best protection, because it makes the facts easier to see.

What the WSIB itself treats as fraud

The WSIB publishes examples of fraud and abuse of the system. On the worker side, these include:

  • falsely claiming that an injury is work related
  • misrepresenting an injury or illness to receive benefits
  • failing to report all employment income while receiving benefits

The same page lists provider fraud, such as billing for services never delivered, and business offences such as failing to report an accident or reporting inaccurate payroll.

Workers receiving benefits also have a legal duty to tell the WSIB about a material change in their circumstances within 10 days, under section 23 of the Workplace Safety and Insurance Act.

Warning signs worth a closer look

None of these signs proves anything on its own. People recover at different speeds and pain is real even when it can’t be seen. Treat them as reasons to document carefully, not to accuse.

The story keeps changing

Details of how the injury happened shift between the first report and later discussions, or don’t line up with schedules, logs or what co-workers saw.

The timing feels convenient

The claim arrives right after a disciplinary meeting, a layoff notice or a denied vacation request. Timing alone means little, but combined with other gaps it can matter.

No one saw it, and nothing records it

The incident happened with no witnesses or camera coverage and was reported days later with no first aid record. Genuine injuries can look like this too, which is why documentation habits matter.

Suitable work is always refused

The worker turns down every modified duty offer, even ones clearly inside the functional abilities on file.

Activity that doesn’t match the restrictions

Co-workers mention seeing the person doing heavy renovations or working for another business while off on a claim. Hearsay like this is a starting point at most and needs proper checking.

Practical steps inside your own workplace

You can do a lot without outside help, and all of it is fair to the worker:

  1. Record the incident fully and promptly, including the first aid given, who was present and the exact location.
  2. Preserve any existing video, access card data, schedules and job logs before routine deletion cycles erase them.
  3. Collect short written accounts from witnesses while memories are fresh.
  4. Use the WSIB Functional Abilities Form so restrictions are clear, and put modified work offers in writing.
  5. If you disagree with a WSIB decision, act within the objection time limits. You generally have 30 days for return to work decisions and six months for most others.

When an outside investigation makes sense

Sometimes the internal record isn’t enough. You may have credible information that a worker is employed elsewhere or working well beyond their documented limits, with no lawful way to confirm it yourself. That is where a WSIB claim investigation can help.

A licensed investigator can carry out lawful tracking and surveillance in public places, check open source and public records, and interview witnesses. The goal is not to “catch” anyone but to produce accurate, well documented facts that hold up on review. Sometimes those facts support the claim, which is a useful outcome too.

If the concern sits inside a wider pattern, such as staged incidents or collusion with a provider, it may overlap with broader insurance fraud investigations. And where the claim is tangled up with a harassment complaint or a workplace conflict, a separate workplace investigation can keep each issue clean.

The lawful limits, and why they protect you

Private investigators in Ontario must be licensed under the Private Security and Investigative Services Act, 2005. Investigators have no police powers, and evidence gathered improperly can hurt your case and expose you to liability.

In practice, that means:

  • surveillance stays in public spaces, with no filming into homes or other places where a person reasonably expects privacy
  • no trespassing, no tracking devices placed on someone’s vehicle without legal authority, and no pretending to be someone else to obtain medical or financial records
  • no accessing private social media accounts through deception
  • personal information is collected, used and stored in line with privacy law, including the federal PIPEDA rules that apply to commercial activity in Ontario

Clean methods are what make findings credible.

You can also report directly to the WSIB

If you suspect fraud, the WSIB runs a confidential action line at 1-888-745-3237 and accepts reports online through its fraud reporting page. You do not need to complete an investigation first.

Talk it through confidentially

If something about a claim doesn’t sit right, a short conversation can help. Investigation Hotline is a licensed private investigation firm based in Toronto, working with employers across Ontario since 2015. Contact us for a confidential consultation and we will tell you honestly whether an investigation is likely to add value.

Frequently asked questions

Can I refuse to report an injury if I think the claim is fake?

No. The WSIB requires employers to report qualifying injuries within three business days, even when they doubt the injury is work related. The WSIB makes that decision. You can share your concerns and supporting facts with the WSIB.

Is it legal to put an injured worker under surveillance in Ontario?

Surveillance by a licensed investigator in public places is generally lawful when there is a legitimate reason for it. It cannot extend into private spaces, involve trespassing or rely on deception to obtain private records.

Will surveillance footage automatically end a claim?

No. Footage is one piece of evidence that the WSIB weighs alongside medical information and other records. Context and careful reporting matter more than dramatic moments.

How long do I have to object to a WSIB decision?

Generally 30 days for decisions about return to work and six months for most other decisions. Check the deadline in your decision letter, since the WSIB must receive your objection within that time.

Should I confront the worker if I suspect fraud?

It is usually better not to. Confrontation can look like intimidation and often causes evidence to disappear. Stay professional, document everything and get advice first.

To learn more, contact Investigation Hotline at

+1 416-205-9114