How to Apply for Long-Term Disability in Ontario
Applying for LTD means the right forms, strong medical evidence, and hitting your deadlines. Here is how the process works and the mistakes that get claims denied.

Key takeaways
- An LTD application usually needs three forms: from you, your employer, and your doctor.
- Benefits start after a waiting (elimination) period, often when your short-term disability ends.
- The medical evidence is the heart of the claim. Weak or vague support is the top reason for denial.
- Deadlines matter at every stage. Missing one can sink the claim.
- If your application is denied, that is not the end. It can be challenged.
In this article
Applying for long-term disability can feel overwhelming, especially when you are already unwell. But the process is manageable if you understand the pieces and, most importantly, get the medical evidence right. That is where claims are won or lost.
✅Quick answer. To apply for LTD, you typically submit three forms, an employee statement, an employer statement, and an attending physician's statement, along with supporting medical records. Benefits begin after a waiting period, often when short-term disability runs out. The strength of your medical evidence and hitting your deadlines are what decide the outcome. A denial is not final.
What forms do you need?
- Employee's statement: your description of your condition, your job, and how you are limited.
- Employer's statement: confirming your role, hours, coverage, and last day worked.
- Attending physician's statement: your doctor's medical opinion on your diagnosis, treatment, and restrictions. This is the most important document.
The waiting (elimination) period
LTD does not usually start the day you stop working. There is a waiting period, often several months, that frequently lines up with the end of your short-term disability coverage or a set number of weeks off. You generally need to apply in advance so benefits can begin as soon as that period ends.
Why the medical evidence matters most
The insurer decides largely on paper, so the quality of your medical support is critical. Clear documentation of your diagnosis, your treatment, and, crucially, how your condition limits your ability to function and work is what carries the claim. Vague or thin medical notes are the single most common reason applications are refused.
Common mistakes that get claims denied
- Weak or inconsistent medical evidence, or gaps in treatment.
- Missed deadlines for applying or providing information.
- Inconsistencies between the forms, your medical records, and your activity.
- Not understanding the definition of disability your policy actually uses.
What happens after you are approved?
Approval is not necessarily the end of the process. Insurers require ongoing proof that you remain disabled, and they reassess, especially around the change from own occupation to any occupation at about two years. Keeping up your treatment and documentation protects you against a later cutoff.
What if your application is denied?
A denial is common and not final. You can challenge it, and many are overturned with stronger evidence and legal pressure. Watch the limitation deadline, and be careful about relying only on internal appeals. See what to do when your LTD claim is denied, or get a free review.
Frequently asked questions
How do I apply for long-term disability in Ontario?
You typically submit three forms, an employee statement, an employer statement, and an attending physician's statement, plus medical records. Benefits start after a waiting period, often when short-term disability ends.
How long is the waiting period for LTD?
It varies by policy but is often several months, frequently coinciding with the end of short-term disability. You generally apply in advance so benefits can begin when the waiting period ends.
Why do LTD applications get denied?
The most common reasons are weak or inconsistent medical evidence, gaps in treatment, missed deadlines, and inconsistencies across the forms and records. Strong medical documentation is key.
What happens after my LTD claim is approved?
Insurers require ongoing proof that you remain disabled and reassess periodically, especially at the change from own occupation to any occupation around two years. Keep up your treatment and documentation.

Omar Haddad
Legal Writer, Mirza Law
Omar Haddad is a legal writer at Mirza Law in Toronto. He writes about termination, medical and disability leave, and what the law protects when an employee is let go.
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