Can Employer Fire You for Calling in Sick Ontario? | ESA Rights

Ontario's ESA provides strong protections against termination for legitimate illness. Here's what you need to know about your rights.

Can Your Ontario Employer Fire You for Calling in Sick?

Yes, Canadian employers can request a sick note, but provincial rules vary. MedLetter provides same-day physician documentation for $49 that satisfies employer requirements across all provinces — delivered by email, no clinic visit needed.

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

The short answer: No, not for legitimate illness. Ontario's Employment Standards Act (ESA) and the Ontario Human Rights Code provide strong protections for employees who need time off due to illness. This applies to most employees working in cities like Toronto, Ottawa, Hamilton, Mississauga, Brampton, and London.

Your Legal Protections in Ontario

Understanding your rights as an employee in Ontario is crucial. The provincial government has established clear guidelines to protect workers when they need to take time off due to illness.

Under the Ontario ESA, specifically Section 50, most employees are entitled to:

3 unpaid sick days per calendar year. These days are job-protected, meaning your employer cannot terminate your employment for using them. To be eligible, an employee must have been employed for at least two consecutive weeks.

No medical note required for these 3 days. Thanks to the Working for Workers Act, 2022, employers in Ontario cannot require a medical certificate from a qualified health practitioner (like a physician, registered nurse, or psychologist) for these initial three ESA-protected sick days. This significant change aims to reduce administrative burdens on healthcare professionals and employees.

Job-protected leave means your employer cannot terminate you or penalize you for exercising your right to these entitlements.

Beyond the ESA, the Ontario Human Rights Code offers another layer of protection. Disability, which broadly includes temporary illnesses, is a protected ground under the Code. Terminating an employee because they are sick, especially if the illness constitutes a disability, can be considered discrimination. Employers have a duty to accommodate employees with disabilities, including temporary illnesses, to the point of "undue hardship." This means they must explore options to support your return to work or adjust your duties, rather than immediately resorting to termination.

When Termination COULD Be Lawful

While strong protections exist, there are specific, limited circumstances where an employer might lawfully terminate an employee who has been absent due to illness. These situations generally fall outside the scope of the ESA's protected sick days or involve a breach of employment contract terms.

1. Excessive Absenteeism: If an employee has a pattern of unexplained absences that go beyond their ESA entitlements and any other legitimate leaves, and this occurs after the employer has implemented progressive discipline (e.g., verbal warnings, written warnings), termination might be considered. This typically involves a significant number of absences that genuinely impact the business, not just a few sick days.
2. Frustration of Contract: This is a high legal threshold. If an employee's illness or injury makes it impossible for them to perform the fundamental duties of their job for an extended, indefinite period, the employment contract might be considered "frustrated." This means the contract can no longer be fulfilled. This is generally reserved for long-term or permanent disabilities where accommodation is not possible without undue hardship to the employer.
3. Failure to Provide Documentation (for absences beyond 3 days): While a medical note is still recommended for the first three ESA sick days, employers can request "evidence reasonable in the circumstances" for absences exceeding these days, or for other types of leave. If your employer has a legitimate policy requiring a sick note or other documentation for extended absences, and you fail to provide it without a valid reason, it could lead to disciplinary action, potentially including termination. This is particularly relevant for short-term disability claims or requests for workplace accommodations.
4. Dishonesty: If an employer can prove that you were not actually sick when you claimed to be, this constitutes a serious breach of trust and can be grounds for termination for cause. This is a situation where an employer would need clear and compelling evidence.
5. Undue Hardship (in accommodation): Under the Human Rights Code, employers must accommodate an employee's disability (including illness) unless doing so would cause "undue hardship." Undue hardship is a very high bar and typically involves significant financial costs or health and safety risks that cannot be mitigated. It's not simply an inconvenience for the employer.

The Working for Workers Act Protection

The Working for Workers Act, 2022 (which amended the ESA) introduced crucial changes regarding medical documentation for sick leave in Ontario. As of October 28, 2024, employers cannot require a medical note for the 3 ESA-protected sick days. This means:

For days 1-3 of sick leave, you do not need a doctor's note or any other medical certificate.

This eliminates the burden on employees to visit a doctor solely to obtain a note for a minor illness, saving them time and potential out-of-pocket costs.

Employers who demand notes for these specific days are violating the ESA and can face fines.

However, for absences beyond these three days, or for other types of leave (like family responsibility leave under ESA Section 50.0.1 or bereavement leave under ESA Section 50.0.2), an employer may still request "evidence reasonable in the circumstances" to confirm the employee's entitlement to the leave. This evidence doesn't necessarily have to be a doctor's note, but a note from a medical professional is often the most straightforward way to provide it.

What to Do If You're Threatened

If you find yourself in a situation where your employer in Ontario (whether Scotiabank, Bell, Rogers, or a small business) is threatening to fire you for calling in sick, especially in cities like Toronto, Ottawa, or Hamilton, it's vital to act strategically to protect your rights.

1. Document everything: Keep a meticulous record of all communications. This includes saving emails, text messages, and notes from phone calls or in-person conversations. Note down dates, times, who you spoke to, and what was discussed. This documentation will be invaluable if you need to pursue a complaint.
2. Get a sick note (for absences beyond 3 days): For any sick leave beyond your 3 ESA-protected days, obtaining proper medical documentation is your best defense. A legitimate sick note from a licensed healthcare professional confirms your illness and your inability to work. MedLetter can help here, providing physician-reviewed sick notes the same day for just $49, ensuring you have the necessary documentation quickly and conveniently, no matter if you're in Mississauga (Square One, Port Credit, Streetsville, and Erin Mills), Brampton, or Kitchener.
3. Know your rights: Familiarize yourself with the specifics of the ESA and the Ontario Human Rights Code. Review your employment contract and any company policies related to sick leave and absenteeism. The more informed you are, the better you can advocate for yourself.
4. File a complaint: If your employer is violating your rights, you have recourse.
* Ontario Ministry of Labour: For violations of the ESA, such as being denied your 3 job-protected sick days or being forced to provide a doctor's note for them, you can file a complaint with the Ministry of Labour. They have employment standards officers who investigate complaints.
* Human Rights Tribunal of Ontario (HRTO): If you believe you've been discriminated against based on a disability (including illness), you can file an application with the HRTO. The HRTO is an independent tribunal that resolves human rights complaints. It's advisable to gather all relevant evidence before filing.

How MedLetter Helps

When you're dealing with an illness, the last thing you need is the stress of navigating employer demands for documentation. If your employer is pressuring you about sick days beyond your 3 ESA-protected days, or if you need documentation for other types of leave or accommodation requests, having proper medical documentation is your best protection. MedLetter provides physician-reviewed sick notes for just $49 with same-day delivery. Our service is convenient and accessible across Ontario, whether you're in Ottawa, London, or smaller communities, ensuring you can focus on your recovery without added worry.

What Employers Need to Know

Canadian employment law, particularly in Ontario, aims to strike a balance between an employer's operational needs and an employee's right to privacy and fair treatment.

Confirmation of Illness, Not Diagnosis: Employers can request confirmation that an employee was ill and unable to work, but they generally cannot demand specific details about the diagnosis or medical condition. This protects employee privacy.

Required Note Content: A legitimate sick note should typically state the dates of absence, confirm that the employee was or is unfit for duties, and provide an expected return-to-work date. It should also include the physician's name, signature, and CPSO registration number.

No Direct Physician Contact: Employers cannot contact the employee's physician directly without the employee's explicit consent. This is a breach of privacy and confidentiality.

Harassment Concerns: Repeatedly requiring a medical note for every single-day absence, especially after the Working for Workers Act, 2022 explicitly removed this requirement for the first three ESA days, could be seen as harassment or a violation of employment standards.

Cost Considerations for Employers and Employees

The process of obtaining a sick note has financial and time implications for both employees and employers.

From an employer's perspective, the cost of replacing a sick employee for a day, or the lost productivity due to an employee spending hours at a clinic, often far exceeds the cost of a sick note. Some progressive employers, recognizing this, choose to reimburse sick note costs as a best practice, fostering goodwill and reducing unnecessary time away from work.

Frequently Asked Questions

Can I get a sick note online in Ontario?
Yes, absolutely. The College of Physicians and Surgeons of Ontario (CPSO) recognizes virtual care as a legitimate form of medical consultation. This means that a sick note issued by a CPSO-licensed physician after a virtual assessment is legally valid and must be accepted by Ontario employers (including Shopify, TD Bank, RBC, Amazon, Loblaws, and government agencies). MedLetter connects you with CPSO-registered physicians who can provide these notes.

How much does an online sick note cost in Ontario?
The cost for an online sick note in Ontario can vary. Some services might charge a subscription fee or different rates. MedLetter offers a transparent, flat fee of $49 for a sick note with same-day delivery, including the physician assessment and official documentation. This is often more affordable and convenient than typical walk-in clinic fees, which can range from $20-50, plus the hidden cost of lost wages from waiting.

Will my Ontario employer accept an online sick note?
Yes. As confirmed by the CPSO and employment law experts, online sick notes are legally equivalent to in-person notes. All Ontario employers (including Shopify, TD Bank, RBC, Amazon, Loblaws, and government agencies) are expected to accept documentation from a CPSO-registered physician, regardless of whether the consultation was in-person or virtual. If your employer questions its validity, you can reference the CPSO's guidelines on virtual care.

How long does it take to get a sick note from MedLetter?
MedLetter prioritizes quick service. Most sick notes are delivered within 2-6 hours of submission. Same-day delivery is standard, ensuring you get your documentation promptly when you need it for work or school.

Can I get a sick note on a weekend in Ontario?
Yes. MedLetter accepts submissions 7 days a week, including Saturdays and Sundays. This is a significant advantage over many Ontario walk-in clinics, which often have severely limited weekend hours or are closed entirely, especially in smaller communities outside of major hubs like Toronto or Mississauga. Submitting your request before 2 PM EST on a weekend can ensure same-day delivery, making MedLetter the fastest option if you fall ill on a weekend and need documentation for Monday.

What if my employer demands a specific diagnosis on the sick note?
Your employer is generally not entitled to a specific diagnosis. Medical information is confidential. A valid sick note should confirm your inability to work due to illness and the expected duration of absence, without disclosing private health details. If an employer insists on a diagnosis, it may be a violation of your privacy rights under the Personal Health Information Protection Act (PHIPA) and potentially the Human Rights Code. You can politely inform them that your medical professional has provided all necessary and appropriate information.

What if I don't have a family doctor in Ontario?
Many Ontarians, particularly in growing cities like Brampton and Vaughan, lack a family doctor. This is where virtual care services like MedLetter become invaluable. You do not need a family doctor to use MedLetter. Our platform connects you with a li

Can My Employer Fire Me for Calling in Sick in Ontario? (2026)