Sun Life sends a denial letter, not a final decision
When Sun Life denies your disability claim, that letter is not the end of the process—it is the beginning of your options. Sun Life is a private insurance company, not Social Security, so the rules for what happens next depend entirely on your policy and the reason they gave for the denial. Most Sun Life policies include a formal appeal process, and many denials are overturned on appeal because the first reviewer missed something or applied the policy language too narrowly.
The denial letter itself is your most important document. It will tell you exactly why Sun Life said no—whether they believe you do not meet the definition of disability in your policy, whether they think you can still work, whether they need more medical records, or whether they are questioning whether your condition is real. That reason determines what you do next.
Key Takeaways
- Sun Life's denial letter must explain their reason and tell you how long you have to appeal, usually 30 to 60 days depending on your policy.
- An appeal means sending Sun Life additional medical evidence, a written statement from you, or both—not starting over from scratch.
- If Sun Life says you can work, your doctor's statement that you cannot is often the single most persuasive piece of an appeal.
- If Sun Life denies your appeal, you can file a complaint with your state's insurance commissioner, which is free and sometimes leads to a review of the decision.
- Some policies include an independent review process outside Sun Life; check your denial letter to see if yours does.
Read the denial letter for the specific reason and the appeal important date
Sun Life must tell you in writing why they denied your claim. Common reasons include: your condition does not match the policy's definition of disability; Sun Life believes you can perform some type of work; your medical records do not support the severity you described; or Sun Life needs more information before deciding. The letter will also state how many days you have to appeal—this is usually 30 to 60 days, but your policy controls the exact number.
Write down the important date date on a calendar or set a phone reminder. Missing the important date can close your appeal rights permanently, depending on your policy. If the important date is fewer than 14 days away when you receive the letter, start gathering your materials when ready.
If the letter does not clearly state a reason or does not mention an appeal process, call Sun Life's claims department and ask them to explain both in writing. Do not rely on what a phone representative tells you—get it in writing so you have a record.
Gather medical records and statements that directly address Sun Life's reason for denial
An appeal is not a second process. You are not starting over; you are answering Sun Life's specific objection. If they said your condition is not severe enough, you need medical records showing it is. If they said you can work, you need your doctor to explain why you cannot. If they said they need more information, you need to provide exactly what they asked for.
Contact your treating doctors—the ones who see you regularly for your condition—and ask them to write a statement addressing Sun Life's reason for denial. A good statement is specific: instead of "the patient is disabled," it says "the patient cannot sit for more than 20 minutes without severe pain, cannot lift more than 5 pounds, and has cognitive fog that prevents sustained concentration." Ask your doctor to reference the specific job duties you performed before you became ill or injured, and explain why your condition prevents you from doing those duties now.
Gather any medical records created after your initial process—test results, imaging, therapy notes, hospitalizations, medication changes. If Sun Life's denial mentioned a specific date or time period, prioritize records from around that time. If they said you have not tried treatment, include records showing what treatments you have tried and why they did not work or stopped working.
Write a clear, factual appeal letter explaining what Sun Life got wrong
You do not need a lawyer to appeal, though some people hire one. You can write the appeal yourself. Keep it short—one to three pages—and organize it around Sun Life's stated reason for denial.
Start by restating what Sun Life said: "Sun Life denied my claim because they believe I can perform sedentary work." Then explain why that is incorrect, using your medical records and your doctor's statement as evidence. Be specific about your symptoms, how they affect your ability to work, and what your doctors say. Avoid emotional language; stick to facts and medical evidence.
Include a list of all documents you are sending with the appeal—medical records, doctor's statement, test results, anything else. Number them so Sun Life can track what they received. Keep a copy of everything for yourself.
Submit your appeal before the important date, with proof of delivery
Check your denial letter for where to send the appeal. Some policies require you to mail it to a specific address; others allow email. If the letter does not say, call Sun Life and ask for the correct address or email for appeals.
If you mail the appeal, use certified mail with return receipt so you have proof Sun Life received it. Take a photo of the receipt and keep it with your copies of the appeal materials. If you email it, request a read receipt or follow up with a phone call to confirm they received it.
Do not assume Sun Life received your appeal just because you sent it. Call their claims department a few days after you submit it and confirm they have it in their file. Write down the date you called, the name of the person you spoke with, and what they said.
If Sun Life denies your appeal, file a complaint with your state insurance commissioner
If Sun Life denies your appeal, you have another option before going to court: your state's insurance commissioner. This is a free government office that investigates complaints about insurance companies. Filing a complaint does not cost you anything and does not require a lawyer.
To file, search online for "[your state] insurance commissioner complaint" or "[your state] department of insurance." Most states have an online form or a phone number. You will need to provide your policy number, the dates of your claim and denial, and an explanation of why you believe Sun Life made a mistake. The commissioner's office will contact Sun Life and ask them to respond to your complaint. Sometimes this leads to Sun Life reversing the denial; sometimes it leads to a formal review.
Filing a complaint with the insurance commissioner does not prevent you from suing Sun Life later if you want to, but many people find that the commissioner's involvement resolves the problem without court.
Understand what happens if your policy includes an independent review process
Some Sun Life policies include an independent review option, which means an outside doctor or medical reviewer—not employed by Sun Life—will look at your case. If your denial letter mentions this, you may be able to request an independent review instead of or in addition to appealing to Sun Life directly. This is different from appealing to Sun Life, because the independent reviewer is not trying to protect Sun Life's money.
If your policy includes independent review, the denial letter should explain how to request it and whether there is a cost. Many policies cover the cost of independent review. If your denial letter does not mention it, call Sun Life and ask whether your specific policy includes this option.
Frequently Asked Questions
How long does a Sun Life appeal usually take?
Sun Life typically has 30 to 45 days to review an appeal and send you a decision, though some policies allow longer. Call Sun Life's appeals department after 30 days and ask for a status update if you have not heard back. Get the name of the person you speak with and the date you called.
Can I appeal more than once if Sun Life denies my first appeal?
Most Sun Life policies allow one appeal of the initial denial. After that, your options are usually an independent review (if your policy includes it), a complaint to your state insurance commissioner, or filing a lawsuit. Check your policy or call Sun Life to confirm how many appeals your specific policy allows.
Should I hire a lawyer to appeal a Sun Life denial?
You do not need a lawyer to appeal, and many people successfully appeal on their own. A lawyer can be helpful if the appeal is complex, if Sun Life's reason for denial is unclear, or if you have already appealed once and been denied. Some lawyers work on contingency, meaning they only get paid if you win.
What if Sun Life says they need more medical records before they can decide?
This is not technically a denial—it is a request for more information. Send Sun Life the records they asked for as quickly as you can. If you cannot get them (for example, if your doctor has retired), write to Sun Life explaining why and ask whether other records would help instead. Keep a record of what you sent and when.
Can I work part-time while appealing a Sun Life denial?
That depends on your policy and your condition. Some policies allow part-time work; others do not. Check your policy language or call Sun Life and ask. If you do work while appealing, keep records of your hours and earnings, because Sun Life may ask about this during the appeal.