Sick Note Migraines Ontario | Same Day Documentation

Migraines can be debilitating and unpredictable. Here's how to get proper documentation in Ontario without waiting for a clinic appointment.

Updated August 2026, Current Ontario ESA and CPSO telemedicine standards.

Getting a Sick Note for Migraines in Ontario

Migraines affect approximately 1 in 7 Canadians, and they're one of the leading causes of workplace absenteeism. If you suffer from migraines in Ontario, here's what you need to know about documentation.

Are Migraines a Valid Reason for a Sick Note?

Absolutely. Migraines are a recognized neurological condition. They can cause:

Severe, debilitating pain

Nausea and vomiting

Sensitivity to light and sound

Inability to concentrate or function

No employer can reasonably expect you to work through a severe migraine.

When to Get Documentation

Consider getting a sick note for migraines when:

Your employer requires documentation for absences

You've missed 3+ consecutive days

You have a pattern of migraine-related absences and want to establish a medical record

You need workplace accommodations (reduced screen time, lighting changes, flexible scheduling)

Urgent Scenarios: When You Need a Note Fast

Migraines are unpredictable. You might find yourself in an urgent situation where you need documentation immediately. Common scenarios include:

The Morning Demand: Your boss demands a note by tomorrow morning, but your family doctor is booked for weeks.

The Weekend Attack: You called in sick on a Saturday or Sunday when most walk-in clinics in cities like Toronto or Ottawa are closed or have reduced hours.

The After-Hours Requirement: You work an evening shift at an Amazon warehouse or a hospital, and you need a note before your next shift, but clinics are closed.

The "No Note, No Pay" Policy: You called in sick without a note, and HR informs you that your absence will be unpaid unless you provide documentation within 24 hours.

In these high-stress situations, waiting for an appointment is not an option, especially when you are dealing with the debilitating symptoms of a migraine.

Chronic Migraines and Workplace Accommodation

If you experience chronic migraines (15+ days per month), you may be entitled to workplace accommodations under the Ontario Human Rights Code. The Ontario Human Rights Tribunal takes these accommodations seriously. Potential adjustments include:

Modified lighting at your workstation

Flexible start/end times

Work-from-home options during episodes

Reduced screen time or regular breaks

How MedLetter Helps

When a migraine strikes, the last thing you want to do is sit in a bright, noisy walk-in clinic in Mississauga (Square One, Port Credit, Streetsville, and Erin Mills) or Brampton. MedLetter lets you get a sick note from home in same day, no clinic visit required. You can New sick-note requests are temporarily paused while we review our service. We are not accepting new orders at this time. in minutes.

Ontario Employment Standards: Your Rights

Under Ontario's Employment Standards Act, 2000 (ESA), employees are entitled to 3 unpaid sick days per year (some employers offer paid days). Important provisions:

Employers cannot require a doctor's note for ESA-protected sick days as of January 2024 (Working for Workers Act amendments). This is outlined in ESA Section 50.

The Ontario Human Rights Code requires employers to accommodate medical conditions to the point of undue hardship.

Federally regulated employees in Ontario get 10 paid sick days under the Canada Labour Code.

Many Ontario employers (including Shopify, TD Bank, RBC, Amazon, Loblaws, and government agencies) still request notes as a matter of company policy (distinct from legal requirement).

Ontario-Specific Employer Context

Different employers have different policies. Large institutions like the Ontario Public Service, TTC, OPG, TD Bank, RBC, and Shopify often have strict HR protocols regarding absenteeism. While the ESA protects your minimum rights, these organizations may require documentation for extended absences or to access short-term disability benefits. Whether you are working in a corporate office in downtown Toronto or a manufacturing plant in Hamilton, understanding your specific employer's policy is crucial.

Statistics: Healthcare Access in Ontario

According to Ontario Health and Statistics Canada (2025-2026):

2.3 million Ontarians lack a regular family doctor or nurse practitioner.

Average emergency room wait time in Ontario: over 4 hours for non-urgent cases.

Walk-in clinic wait times in the GTA (including Toronto, Mississauga, and Brampton): 1.5-3 hours on average.

Wait times in other major cities like London, Kitchener, and Windsor can also exceed 2 hours during peak times.

Ontario has the lowest physician-to-population ratio of any large province.

Practical Steps for Ontario Employees

1. Know the ESA - Your your employer faces consequences for penalizing you for taking your 3 statutory sick days.
2. Check your employment contract - Many Ontario employers (including Shopify, TD Bank, RBC, Amazon, Loblaws, and government agencies) offer 5-10 paid sick days beyond the ESA minimum.
3. Unionized workers - OPSEU, CUPE, and Unifor contracts typically provide 12-18 paid sick days annually.
4. Document everything - Keep a record of when you called in and who you spoke to.
5. Accommodation requests - If you have a chronic condition, consider requesting formal workplace accommodation under the OHRC.
6. WSIB Claims - If your migraines are directly caused by a workplace injury (e.g., a concussion), you may need to file a claim with the Workplace Safety and Insurance Board (WSIB).

When a Sick Note May Not Be Required

While Ontario law has specific rules, most employers still require documentation. Here's when you need to protect yourself:

Your 3 annual ESA sick days (Working for Workers Act, 2024)

Family responsibility leave (up to 3 days)

Bereavement leave (up to 2 days)

Domestic or sexual violence leave

What Employers Need to Know

Canadian employment law balances employer interests with employee privacy:

Employers can request confirmation of illness but not specific diagnoses.

The note should state: dates of absence, that the employee was/is unfit for duties, and expected return date.

Employers cannot contact the physician directly without employee consent.

Requiring a note for every single-day absence may constitute harassment in some jurisdictions.

Cost Considerations for Employers

Walk-in clinic notes cost employees $20-50 and require 2-4 hours away from work.

Virtual sick notes reduce time away from work to minutes.

Some employers reimburse sick note costs as a best practice.

The cost of replacing a sick employee for a day far exceeds the cost of documentation.

Comparing Sick Note Options in Ontario

When you need a sick note for a migraine, you have a few options. Here is a comparison to help you decide:

Note: MedLetter operates in full compliance with CPSO telemedicine guidelines, ensuring your note is legally valid and accepted by employers.

Frequently Asked Questions

Can I get a sick note online in Ontario?
Yes. CPSO-licensed physicians can assess patients through virtual consultations and issue legally valid sick notes accepted by Ontario employers (including Shopify, TD Bank, RBC, Amazon, Loblaws, and government agencies).

How much does an online sick note cost in Ontario?
MedLetter charges a flat $49 for a sick note with same-day delivery. This includes the physician assessment and official documentation.

Will my Ontario employer accept an online sick note?
Yes. The College of Physicians and Surgeons of Ontario recognizes virtual care. Online sick notes are legally equivalent to in-person notes.

How long does it take to get a sick note from MedLetter?
Most sick notes are delivered within 2-6 hours of submission. Same-day delivery is standard.

What if my employer insists on knowing my diagnosis?
In Ontario, employers are generally not entitled to know your specific medical diagnosis (like migraines). They are only entitled to know your prognosis, your functional limitations, and the expected duration of your absence. A standard sick note confirming you are unfit for work is usually sufficient.

Can I get a sick note retroactively if I was too sick to get one yesterday?
Yes, in many cases. Physicians can issue a note covering past dates if they can reasonably determine that you were ill during that time based on your symptoms and history. However, it is always best to request documentation as soon as possible.

Does OHIP cover the cost of a sick note?
No. The Ontario Health Insurance Plan (OHIP) covers the cost of medical assessments, but it does not cover the administrative fee for writing a sick note or completing medical forms for employers. This is why clinics and online services charge a fee.

Getting a Sick Note for Migraines in Ontario: What You Need to Know