EI Sickness Benefits and Medical Certificates Are Not the Same as Employer Sick Leave
Employment Insurance sickness benefits are a federal benefit program. They are different from a workplace sick-day policy, a provincial leave entitlement, or an employer's decision about attendance. A medical certificate can support information Service Canada requests, but it does not guarantee approval of an EI claim.
What Service Canada Decides
Service Canada applies its own eligibility requirements. Depending on the claim, it may need information showing that illness, injury, or quarantine prevented you from working and may request medical information or supporting documentation. Check the current [EI sickness benefits application guidance](https://www.canada.ca/en/services/benefits/ei/ei-sickness/apply.html) and [eligibility information](https://www.canada.ca/en/services/benefits/ei/ei-sickness/qualify.html) before applying.
What a Medical Certificate May Confirm
A clinician may provide medically appropriate documentation after an assessment. Depending on the clinical facts and requested form, documentation may address the assessment date, functional inability to work, and medically supported period. The clinician should not promise benefit approval, employment protection, or a recovery date that cannot be medically supported.
Before You Request Documentation
1. Read the current Service Canada instructions for the specific benefit or form.
2. Check whether a certificate is currently requested for your stage of the claim.
3. Bring any official form or required wording to the clinical assessment.
4. Use an appropriate care route for ongoing illness, disability, mental-health documentation, workplace injury, surgical recovery, or complex return-to-work questions.
MedLetter's Short-Term Scope
MedLetter provides short-term illness documentation for acute conditions such as a cold, flu, food poisoning, or stomach bug when clinically appropriate. It is not an EI-adjudication service and does not provide broad disability, ongoing-treatment, WSIB, or complex benefits documentation.
Frequently Asked Questions
Will a medical certificate guarantee EI sickness benefits?
No. Service Canada decides eligibility and may request additional information. A clinician can only provide documentation that is medically appropriate after assessment.
Can the same note be used for my employer and EI claim?
Do not assume that one document satisfies both processes. Review each recipient's current requirements and ask about the specific form or information needed.
What if I need documentation for a longer or complex illness?
Seek ongoing care from the clinician or service appropriate to the condition and benefit process. MedLetter's short-term service is limited to brief acute illnesses.
Related Resources
- [Ontario EI Sickness Benefits Guide](/blog/ontario-ei-sickness-benefits-medical-certificate)
- [How to Submit a Sick Note to an Employer](/blog/how-to-submit-sick-note-employer-canada)
- [Canada Doctor Note Guide](/doctor-note-canada)
- [Sick Leave Rules by Province](/blog/canadian-sick-leave-laws-2026-every-province)