Sun Life cut off your LTD benefits at 24 months? Understand the change-of-definition trap
A practical Ontario guide to the 24-month LTD change-of-definition review, why Sun Life may terminate benefits, and what evidence helps an appeal.
Published May 25, 2026 · 8 min read · By Nicolas Faye
Many Sun Life long-term disability policies become harder to satisfy after about 24 months. At the beginning of a claim, the question is often whether your disability prevents you from doing your own occupation. Later, the policy may ask whether you can do any occupation that reasonably fits your education, training, and experience.
That transition is often called the change of definition. It can feel like a trap because benefits may stop even though your diagnosis has not changed and your symptoms have not improved. The insurer is not always saying you are fully healthy. It may be saying that, under the later policy test, it believes there is other work you can do.
This article is for Ontario LTD claimants trying to understand a Sun Life 24-month termination or warning letter. It is not legal advice. It is a practical way to organize the problem before you decide what help you need.
Why the 24-month point matters
The 24-month point matters because the policy test may shift. During the own-occupation period, the focus is usually your real job. During the any-occupation period, the focus may become other jobs that match your background and restrictions.
Read the exact wording in your policy. Do not rely only on the phrase "any occupation." Some policies include qualifiers about education, training, experience, earnings, or suitability. Those words matter. A suggested job that ignores your actual background, treatment schedule, medication side effects, or need for predictable attendance may not answer the real policy test.
What Sun Life may rely on
At the change-of-definition stage, Sun Life may rely on documents such as:
- Updated attending physician statements.
- Internal medical or nurse reviews.
- Independent medical examination reports.
- Functional ability forms.
- Transferable skills analysis.
- Vocational reports.
- Return-to-work or rehabilitation notes.
- Surveillance, activity notes, or social media observations.
Ask for the documents Sun Life relied on. If a vocational review says you can work as a dispatcher, clerk, customer service representative, or another sedentary role, you need to know what assumptions were made. Did the reviewer assume full-time attendance? Did they account for flares, pain, fatigue, cognitive limits, medication effects, or medical appointments?
The common gap: diagnosis versus function
Many appeals fail because they only repeat the diagnosis. Diagnosis is important, but LTD decisions usually turn on function. The appeal should explain what you cannot do reliably, safely, and consistently in a real work setting.
For example, a stronger appeal does not just say, "I have chronic pain." It explains:
- How long you can sit, stand, walk, drive, type, or concentrate.
- What happens after you exceed those limits.
- How often symptoms flare.
- Whether you can keep a predictable schedule.
- Whether medication affects alertness, memory, reaction time, or stamina.
- Why part-time activity does not equal full-time work capacity.
If Sun Life says you can perform sedentary work, answer the specific demands of sedentary work: sitting tolerance, screen time, concentration, pace, attendance, commute, breaks, and recovery time.
Match the policy test to your work history
At the any-occupation stage, the appeal should connect the policy wording to your actual background. Your age, education, language skills, past work, technical skills, physical restrictions, cognitive demands, and earnings history may all matter.
If Sun Life identifies example jobs, do not only say, "I cannot do those." Break down why each job conflicts with your restrictions. A job may look light on paper but still require sustained sitting, keyboarding, customer contact, multitasking, deadlines, memory, transportation, or reliable attendance.
If the review uses generic job titles, ask whether the job exists realistically in your labour market and whether it would accommodate your restrictions. A theoretical job is not the same as a realistic work capacity.
Evidence that helps at the cutoff stage
Useful evidence often includes:
- A doctor or specialist letter that explains restrictions, limitations, prognosis, and work capacity.
- A functional abilities evaluation or occupational therapy report.
- A medication side-effect summary.
- A personal statement explaining daily function, recovery time, failed attempts to increase activity, and symptom unpredictability.
- Employer job demands for your actual role.
- Records from rehabilitation or return-to-work attempts.
- A response to any vocational report or transferable skills analysis.
Ask treating providers to describe function in practical terms. Phrases like "totally disabled" may be less useful than concrete limits: cannot sit longer than a specific period, cannot maintain attention for a full workday, would need unscheduled breaks, would miss work unpredictably, or cannot tolerate the pace and schedule of full-time work.
Watch the tone and the deadline
The letter from Sun Life should tell you the appeal deadline. Treat that deadline as the date your complete appeal package must be received. If you need more time for medical evidence, ask for an extension in writing and keep proof.
Your appeal can be firm without being aggressive. A reviewer should be able to identify:
- The decision you are appealing.
- The policy definition being applied.
- The assumptions you dispute.
- The evidence that supports your restrictions.
- The outcome you are asking for.
What to do first
Start by creating a short table:
| Sun Life's reason | What assumption is being made? | What evidence responds? | |---|---|---| | You can perform sedentary work | You can sit, focus, attend, and keep pace reliably | Doctor letter, OT report, medication summary, personal statement | | Alternative jobs are suitable | The jobs match your restrictions and background | Vocational response, work history, job demand comparison | | Medical evidence does not support ongoing disability | The file lacks functional detail | Updated specialist and treating-provider evidence |
That table becomes the outline for your appeal. The goal is not to send a larger pile of documents. The goal is to answer the exact reason Sun Life used to stop benefits.
If the termination is old, the amount at stake is large, or you are unsure about limitation periods, speak with a lawyer promptly. An internal appeal should not cause you to miss a legal deadline.
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