You can't work, your paycheque has stopped while the bills keep coming, and the insurance company you counted on to bridge the gap has just told you no. Maybe your claim was denied outright, maybe your benefits were cut off after a few weeks, or maybe your file has been "under review" for so long that it feels like a denial anyway.
For many people, short-term disability (STD) is the first income support they turn to after an injury or illness, which makes a denial at this stage more serious than it looks. Along with the lost weeks of income, a denial can shape your long-term disability claim, your finances, and your recovery for years to come.
This guide explains how short-term disability Ontario plans work, why insurers deny claims even when a condition is real, and what you can do next to protect your rights.
Key Takeaways
Short-term disability insurance replaces part of your income for a limited time when an illness or injury keeps you from working. It's meant to cover the gap between your last paycheque and either your return to work or the start of long-term disability (LTD) benefits. In most cases, short-term disability Ontario coverage comes from your employer rather than the government, so your rights depend largely on the wording of your plan.
Most STD coverage comes through an employer group benefits plan, sometimes called a weekly indemnity plan. Some unionized workers have it through a collective agreement, and a smaller number of people buy individual coverage on their own. Every plan sets its own terms, but most share a few common features.
These are common ranges rather than fixed rules, so your own policy booklet is the only reliable guide to what you're owed. Your human resources department can give you a copy if you don't have one, and it's best to ask in writing (typically via email).
Workers without a workplace plan can turn to EI sickness benefits as a federal fallback. These benefits pay 55% of your average insurable weekly earnings, up to $729 a week in 2026, for up to 26 weeks. You need enough insurable hours to qualify, and there's usually a one-week waiting period. When you do have a workplace plan, it typically pays first, and EI usually won't pay on top of it for the same weeks. The federal government provides an EI Benefits Estimator tool that helps give you an idea of what your benefit payments would look like.
STD and LTD are designed to work in sequence, so when your STD period ends and you still can't work, you'd normally move on to your plan's LTD coverage, which can last for years. The handoff isn't automatic, though, because LTD is a separate claim with its own forms, deadlines, and tougher rules.
The table below shows how short-term disability compares with EI sickness benefits and long-term disability.
|
Benefit |
Source |
Who Pays |
Typical Duration |
Amount Paid |
Disability Test |
|
Short-term disability |
Employer group plan or individual policy |
An insurer, or your employer if the plan is self-funded |
About 15 to 26 weeks |
Often 55% to 75% of earnings |
You can't do your own job |
|
EI sickness benefits |
Federal government (Service Canada) |
The Employment Insurance fund, built from employer and employee premiums |
Up to 26 weeks |
55% of earnings, up to $729 a week in 2026 |
A medical certificate confirms you can't work |
|
Long-term disability |
Employer group plan or individual policy |
An insurer, or your employer if the plan is self-funded |
Often until age 65 |
Often 60% to 70% of earnings |
Your own job at first, then usually any job you're reasonably suited for |
Not every short-term disability Ontario plan works the same way behind the scenes. In an insured plan, an insurance company collects premiums and pays your benefits from its own money. In a self-funded plan (sometimes called an "administrative services only" or ASO plan), your employer pays the benefits itself and hires an insurer only to process claims. Your forms and letters may carry the insurer's logo either way, so many people don't know which kind of plan they have.
Your plan type also decides who is responsible for a wrongful denial. With an insured plan, your claim is usually against the insurer. With a self-funded plan, your employer is often the party you'd need to pursue, and if you're unionized, the dispute may have to go through the grievance process instead of the courts. Choosing the wrong path can waste months you don't have, so it's worth confirming your plan type early.
You generally qualify for short-term disability benefits if a medical condition stops you from doing the main duties of your own job. You don't have to be unable to do any work at all, only unable to do the essential parts of the job you had.
Most STD plans use an "own occupation" test. In plain terms, the insurer asks whether you can still do the job you had. A warehouse worker with a back injury may qualify even if they could answer phones, since lifting is central to their role. Many LTD policies switch to a stricter "any occupation" test after the first two years, which asks whether you can do any job your education, training, or experience reasonably suits you for.
A diagnosis on its own rarely wins a claim, since insurers want evidence that connects your condition to the specific duties you can no longer do.
Insurers most often deny short-term disability claims because the medical evidence is missing, vague, or inconsistent, even when the person is truly disabled. A denial letter reflects the insurer's view of your paperwork and says little about how sick or injured you really are.
Insurers tend to rely on the same handful of reasons when they say no.
|
Reason for Denial |
What It Usually Means |
How to Respond |
|
Late filing |
You missed the plan's deadline for notice or proof of claim |
Ask for the deadline in writing and explain any reason for the delay, such as being in hospital |
|
Incomplete forms |
Sections were left blank, or your doctor didn't explain why you can't work |
Ask your doctor to fill in the missing details and connect your limits to your job duties |
|
Gaps in treatment |
The insurer thinks missed or spaced-out appointments mean you've recovered |
Book regular follow-ups and ask your doctor to explain any gaps, such as long specialist wait times |
|
Insufficient objective evidence |
The insurer wants test results or measurements, not only reports of your symptoms |
Ask for functional assessments, test results, or specialist reports that measure your limits |
|
Pre-existing condition clause |
The insurer says your disability is linked to a condition you had before your coverage started |
Get medical evidence showing what changed, such as a new injury or a clear worsening |
Better evidence or a clearer explanation from your treatment providers can fix many of these problems. When a short-term disability Ontario claim is denied for one of these reasons, the denial letter itself shows you what the insurer says is missing.
Evidence gaps cause the most trouble for conditions that don't show up clearly on a scan. These include depression and anxiety, chronic pain, concussion, and many post-accident injuries such as whiplash or soft tissue damage. Insurers know these claims are harder to prove with test results, so they often lean on that gap to deny them. Mental health claims, for example, often turn on detailed notes from a family doctor, psychologist, or psychiatrist that describe how your symptoms affect concentration, memory, sleep, and your ability to handle workplace demands.
You may also be telling yourself that your injuries aren't that bad, which is a common reaction for people who are used to working through pain. Symptoms that seem manageable today can turn into long-term problems, though, and concussion symptoms in particular can linger for months. A proper medical evaluation protects you from accepting less than your claim is worth, or from going back to work too soon and making things worse.
After a short-term disability denial, act quickly, get everything in writing, and get legal advice before you file an appeal. The steps you take in the first few weeks after a denial often decide whether your claim can be saved.
Ask the insurer for a written explanation of its decision if you haven't received one, along with a full copy of your claim file. Under federal privacy law, you generally have the right to see the personal information an insurer holds about you, including the medical reports, file reviews, and adjuster notes behind the decision. Send your request in writing and keep a copy.
The file often shows what really drove the denial. You may find that a doctor who never examined you reviewed your records, or that the insurer leaned on one line in a report while ignoring the rest. Those details shape what evidence you need next.
While you wait, keep notes of every call with the insurer, including the date, the person's name, and what was said. Keep going to your medical appointments too, since stopping treatment after a denial gives the insurer one more reason to say no.
Once you understand why your claim was denied, you'll likely be offered an internal appeal, which means the same insurer (or employer) reviews its own decision. Some plans allow more than one level of appeal, and each round can take weeks or months while you go without income.
An appeal can help, but a weak one can hurt, because sending the same documents again usually leads to the same conclusion and may leave the insurer more confident defending it later. A rushed appeal can also lock in statements or reports that weaken your case.
A stronger approach is to add new, targeted medical evidence that answers the exact reasons given in the denial letter. For example, a denial that cites a lack of objective evidence calls for test results, a functional assessment, or a detailed letter from your doctor linking your limits to your job duties.
While you work through an appeal, keep an eye on the calendar, since Ontario's general limitation period usually gives you two years to start a lawsuit against the insurer or employer. Working out when that clock starts on a disability claim can be complicated. It's often counted from the insurer's first clear denial, although Ontario courts haven't always agreed, and the answer can depend on your policy wording.
Taking part in an internal appeal doesn't pause or extend the legal limitation period in Ontario. Appeals can drag on for months, and some people learn too late that their time to sue has nearly run out. The safest approach is to treat the date of your first denial as day one and get legal advice well before two years pass.
Your STD file often becomes the foundation of your LTD claim, since insurers review it when they decide whether to approve long-term benefits. In many workplaces, the same insurer handles both types of coverage, so a denial now can follow you later. Protecting your STD claim today is one of the best ways to protect your future LTD benefits.
An STD denial can weaken your LTD claim in several ways.
An insurer that denied your STD claim may also point to that decision as proof you were never disabled in the first place, even if your condition has worsened since.
With an LTD application on the horizon, it's worth getting advice on your long-term disability claim before you apply, especially after an STD denial.
For people hurt in car accidents, workplace disability coverage may now matter more than ever. On July 1, 2026, Ontario made several accident benefits optional, including income replacement, caregiver, and non-earner benefits. Medical, rehabilitation, and attendant care benefits remain mandatory.
Drivers can now choose whether to keep income replacement coverage on their auto policy, and some with disability coverage through work may have dropped it to lower their premiums. If you opted out of income replacement benefits, your short-term disability plan may now be your main source of income after a crash, which puts far more weight on getting your STD claim right.
The reform also made auto insurers the first payer for medical and rehabilitation benefits, which helps preserve your workplace health benefits, but income loss doesn't have the same protection. Workplace disability insurers may examine post-accident claims closely, especially for whiplash, concussion, and chronic pain, so strong medical evidence matters even more. A lawsuit against the at-fault driver can also take years to resolve, so it can't replace a weekly paycheque while you recover. For many accident victims, short-term disability Ontario benefits may now be the main source of steady income in those first months.
Call a lawyer as soon as your claim is denied, cut off, or delayed without clear reasons. Early advice costs you nothing and can stop a fixable problem from becoming a permanent one.
Strype Injury Lawyers is led by Jeffrey Strype, one of relatively few Ontario lawyers certified by the Law Society of Ontario as a Specialist in Civil Litigation. He brings more than 45 years of experience, over 250 trials, and Supreme Court of Canada victories to the files he oversees.
Our in-house nurses review your medical records to find the gaps insurers rely on and the evidence that fills them. You'll work directly with senior lawyers who know your file, rather than being passed between staff at a high-volume firm, and you'll never be treated as just a number. Our social workers also help you and your family deal with the practical and emotional strain of being off work.
Many people worry they can't afford a lawyer, but you don't pay anything upfront. We work on a contingency fee basis, which means you pay no legal fees unless we win. We also advance the disbursements, such as medical reports and expert opinions, at our own risk.
Going to court is another common worry, yet our readiness for trial is often what keeps clients out of the courtroom. Insurers know we're ready to take a case all the way, so they're more likely to settle fair claims long before trial.
A short-term disability denial can leave you feeling powerless against an insurer with far more resources than you have, but you don't have to face it alone. Strype has spent more than four decades standing up to insurers for injured and ill Ontarians, and we know how to build the medical evidence these claims depend on. Whether your claim was denied, cut off, or stuck in review, getting help from Strype is simple, and it starts with a conversation.
Get a free case evaluation today. There's no cost, no pressure, and no obligation, just an honest conversation about your claim and your options. Contact Strype Injury Lawyers to speak with a short-term disability lawyer Toronto workers can count on.
Legal Disclaimer: The information in this article is intended for general educational purposes only and does not constitute legal advice. Every personal injury claim is unique, and the facts of your situation may affect your legal rights and options. If you have been injured or believe you may have a legal claim, contact a qualified personal injury lawyer in Ontario as soon as possible.