INS5140 Explained: The Official Medical Certificate for EI Sickness Benefits
INS5140 is the form number Service Canada gives to the Medical Certificate for Employment Insurance Sickness Benefits, the document a physician or nurse practitioner completes to confirm that an illness, injury, or quarantine has made someone unable to work. Most EI sickness claims start with an online self-declaration, so many claimants never see this form unless Service Canada asks for it directly. When it is requested, the request usually comes with a specific deadline, and a missing or incomplete INS5140 can delay or interrupt benefit payments that are already being paid out. Knowing what the form asks for, who is allowed to sign it, and how it differs from a routine workplace sick note keeps a claimant from submitting the wrong document twice.
What Is the INS5140 Medical Certificate?
INS5140 is issued by Employment and Social Development Canada (ESDC) through Service Canada as part of the Employment Insurance sickness benefits process. It asks a licensed medical practitioner to state, in writing, that a patient is or was unable to work because of illness, injury, or quarantine, and to give the date the incapacity began and the date the patient is expected to be able to return to work. It is not a general-purpose sick note that any employer would accept for any reason. It is a specific federal form tied to a specific EI claim number, and Service Canada uses the dates written on it to calculate how many weeks of sickness benefits that claim can pay.
EI sickness benefits can pay for up to 26 weeks. A completed INS5140 does not need to cover the full 26 weeks in a single submission. A practitioner states the incapacity as they assess it at the time of signing, and Service Canada can request an updated or second certificate later if a claim runs longer than the first estimate suggested.
Who Actually Needs to Fill One Out
Two people are involved in getting an INS5140 to Service Canada: the claimant, who requests the form and submits the completed copy, and the medical practitioner, who fills in and signs the medical sections. The claimant does not complete any part of the practitioner's section themselves, even when they know their own diagnosis and dates well.
Service Canada typically asks for a completed INS5140 in a handful of situations:
A new sickness claim selected for verification - some claims are reviewed before the first payment is released, and Service Canada may request the certificate instead of relying only on the online self-declaration.
A claim where the stated return-to-work date has passed - if payments are still going out after the date a claimant said they expected to recover, Service Canada may ask for updated medical confirmation before continuing.
A claim approaching the 26-week maximum - longer claims are more likely to be asked for supporting medical documentation partway through.
A claim flagged during a random or targeted integrity review - Service Canada checks a portion of claims regardless of how straightforward they appear on the application.
INS5140 vs. the EI Online Self-Declaration
Before 2022, most EI sickness claimants had to submit a paper or PDF medical certificate before Service Canada would process the claim at all. That upfront requirement was removed for most claimants. The online application now includes a self-declaration section where the claimant states the reason for the illness or injury and the relevant dates, without a doctor's signature attached at that stage.
The INS5140 form did not disappear when the self-declaration was introduced. It moved from being a mandatory upfront document to a form Service Canada holds in reserve and can request at any point, either to verify a specific claim or as part of a routine check. This is why some people apply for EI sickness benefits, receive several weeks of payments, and are then asked out of nowhere for a completed INS5140. That request is not necessarily a sign of a problem with the claim. It usually just means the file has come up for review.
Who Can Sign the INS5140
Service Canada's instructions specify that the form must be completed by a medical practitioner authorized to diagnose and treat the condition being claimed. In practice, this covers a narrower group than the phrase your doctor might otherwise suggest:
A licensed physician (MD) - family doctors and walk-in clinic physicians can both complete the form, provided they have actually assessed the patient's condition rather than only reviewing a file.
A nurse practitioner - nurse practitioners are recognized as authorized signers under the same EI sickness benefit rules that apply to physicians.
A relevant specialist - a psychiatrist for a mental health-related claim, or a specialist managing a specific diagnosis, can complete the sections that fall within their own assessment of the patient.
A signature from a practitioner outside these categories is generally not accepted, so it is worth confirming that whoever is completing the form is authorized to sign it before the appointment, rather than finding out after Service Canada rejects it.
INS5140 Is Federal, But Your Employer's Own Sick Note Rules Still Vary by Province
INS5140 works the same way no matter which province a claimant lives in, because EI is a federal program administered entirely by Service Canada. What is not the same across the country is whether an employer can separately demand a doctor's note for a short absence, well before EI sickness benefits are even part of the picture. That separate question is governed by provincial employment standards legislation, not by Service Canada.
Ontario - the Employment Standards Act, 2000 allows employers to request evidence of illness for job-protected leave, but the Act does not require that the evidence come from a doctor specifically or take any particular form.
British Columbia - under the Employment Standards Act, employers can ask for reasonably sufficient proof of illness or injury, which in practice can mean a doctor's note for longer or repeated absences.
Alberta - the Employment Standards Code permits an employer to request a doctor's note in connection with job-protected sick leave taken under the Act, particularly for extended absences.
Quebec - the Act respecting labour standards sets its own job-protected absence rules, and Quebec administers programs such as parental and maternity benefits through its own system, while EI sickness benefits remain federal regardless of province.
A doctor's note requested by an employer under provincial rules and an INS5140 requested by Service Canada under federal rules are two different documents, serving two different purposes, even when they both relate to the same illness and the same time off work.
How to Get Your INS5140 Completed Without Losing Time
Confirm the deadline first. Service Canada's request letter or online message states how many days you have to submit the form, and missing that date is the most common reason a claim's payments get interrupted.
Book with a practitioner who can speak to your dates clearly. Whoever completes the form needs to confirm your condition and its timeline, so seeing a practitioner who already knows your history helps avoid back-and-forth.
Bring your EI claim details to the appointment. Your Social Insurance Number and claim reference help the practitioner fill in the form accurately and avoid a mismatch that could delay processing on Service Canada's end.
Ask whether the form can be completed the same visit. Some practitioners will fill it in on the spot, while others need to review your chart first and have you come back or send it later.
Submit through the exact method Service Canada specified. This is usually through your My Service Canada Account or by mail to the address on the request letter, not by emailing a generic Service Canada address.
If your own doctor has a multi-week wait for a non-urgent appointment, a same-day appointment with a licensed physician is often the faster route to a properly completed certificate, and our medical certificates service is built for exactly this kind of time-sensitive documentation.
What Happens If You Miss the Deadline or the Form Is Incomplete
Missing the submission deadline does not automatically end a claim, but it commonly triggers a payment hold while Service Canada waits for the documentation to arrive. An incomplete form, such as one missing the practitioner's licence number or a clear incapacity start date, is usually sent back for correction rather than accepted as-is, which adds more delay on top of the original request.
Contacting Service Canada before a deadline passes, rather than after, gives you a better chance of having the timeline extended without the claim being suspended in the meantime. For claims involving a more complex diagnosis or an unusual absence pattern, working with a provider that prepares thorough, standard medical forms the first time can also reduce how often a form gets sent back for missing details.
Getting the Paperwork Right the First Time
Most of the friction around INS5140 does not come from the medical facts, since a genuine illness or injury is usually straightforward for a practitioner to confirm. It comes from timing: claimants who wait until close to the deadline to book an appointment, or who see a practitioner who has never treated them and cannot speak to the history of the condition. Booking early, confirming who is allowed to sign the form, and submitting it through the right channel covers most of what actually goes wrong with these claims.
For sickness claims involving a longer leave or a diagnosis that needs more explanation than a standard form allows, our custom medical documentation option can provide the additional detail Service Canada sometimes asks for on more complicated files.
Frequently Asked Questions
Is INS5140 the same as a regular doctor's note?
No. A regular doctor's note is a general statement that you cannot work for a period of time, in whatever format your employer accepts. INS5140 is a specific federal form tied to an EI sickness benefits claim, with fields Service Canada uses to determine how many weeks of benefits to pay.
Do I need to submit INS5140 with every EI sickness claim?
No. Since the online self-declaration was introduced, most claimants only submit INS5140 if Service Canada specifically requests it, whether for verification, a claim that has run long, or a random integrity check.
Who can complete the INS5140 form?
A licensed physician or nurse practitioner who has assessed your condition. Other specialists can complete it when the claim relates directly to their area of practice, such as a psychiatrist for a mental health-related claim.
What if Service Canada asks for INS5140 after I have already been receiving payments?
This is common and does not necessarily mean there is a problem with your claim. Service Canada can request the form at any point, including partway through a claim, as part of routine verification.
Can I get INS5140 completed through a virtual appointment?
Yes, provided the practitioner completing it is licensed to assess your condition and is authorized to sign EI medical certificates. A virtual assessment is treated the same as an in-person one for this purpose.
Does completing an INS5140 cost anything?
It depends on the province and the practitioner. Some physicians include it as part of a covered visit, while others charge a fee for completing third-party forms, since this work generally falls outside what provincial health insurance covers.
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