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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Business & Commercial Law Ontario » Can an Ontario Employer Require Doctors’ Notes for Minor Illnesses?

Can an Ontario Employer Require Doctors’ Notes for Minor Illnesses?

27 Jun 2026 5 min read No comments Business & Commercial Law Ontario
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Under the Ontario Employment Standards Act (ESA), employers are strictly prohibited from requiring a doctor’s note for statutory sick leave (up to three days per year). While you can ask for other “reasonable evidence” like a self-attestation, you cannot require a certificate from a qualified health practitioner.

Managing employee absenteeism is a common challenge for businesses across Ontario. Whether you manage a tech startup in Ottawa, a retail store in London, or a restaurant in Toronto, dealing with staff calling in sick requires a delicate balance. On one hand, you need reliable staffing to keep your operations running smoothly. On the other hand, employees have statutory rights to take time off when they are genuinely ill, and demanding excessive medical proof can damage workplace morale.

The Employment Standards Act (ESA) governs sick leave in the province. 📝 It guarantees eligible employees up to three unpaid sick days per calendar year. When an employee claims one of these days, the law allows you to ask for proof that they are actually sick. But what exactly counts as “reasonable evidence,” and how far can an employer push before crossing the line into a privacy violation? Understanding these boundaries is critical for any Ontario business owner.

Step-by-Step Process for Managing Sick Leave Requests

Handling sick leave requests professionally protects your business from costly employment standards complaints. Here is the generally accepted process for Ontario employers when asking for medical documentation.

Step 1: Understand the Employee’s ESA Entitlements

First, recognize that employees who have worked for you for at least two consecutive weeks are entitled to three unpaid days of sick leave per calendar year. 📅 These days are strictly for personal illness, injury, or medical emergencies. You cannot legally penalize, demote, or terminate an employee for using their statutory sick leave.

Step 2: Request “Reasonable Evidence” (But No Doctor’s Notes)

If an employee calls in sick, you have the right to ask for evidence “reasonable in the circumstances.” However, under the ESA, employers are strictly prohibited from requiring a certificate from a qualified health practitioner (like a doctor, nurse, or psychologist) for the three statutory sick days. Instead, you can request alternative proof that does not require medical intervention, such as a signed self-attestation, an email confirmation, or a receipt from a pharmacy.

Step 3: Medical Notes for Prolonged Absences and Privacy

While you cannot request a doctor’s note for the first three ESA sick days, you can still require one for longer-term medical leaves or when accommodation is requested under human rights laws. 🔒 If a medical note is permitted and requested, you must respect the employee’s privacy. The certificate only needs to state that they are unable to perform their duties due to medical reasons and the expected duration of the absence. Asking for a specific diagnosis is strictly prohibited.

Step 4: Establish a Clear Company Policy

To avoid disputes, your business should have a clear, written absenteeism policy. This policy should outline exactly when a doctor’s note is required (e.g., “after three consecutive days of absence” or “prior to returning to work after a prolonged illness”). Having this in your employee handbook ensures all staff are treated consistently, reducing the risk of human rights or discrimination claims.

How Much Does it Cost in Ontario?

Requesting medical documentation often raises questions about who foots the bill. 💰 Here are the financial considerations for employers and employees:

  • Cost of a Doctor’s Note: When a note is legally permitted (e.g., for leaves exceeding three days), clinics in Ontario typically charge between $20 CAD and $50 CAD for a medical certificate, as this is not covered by OHIP.
  • Who Pays? The ESA does not legally require the employer to reimburse the employee for the cost of the note. However, many progressive companies choose to cover this fee to maintain good employee relations.
  • Employment Lawyer Consultation: If you face a human rights complaint over sick leave, consulting with an employment law firm typically costs $350 CAD to $600 CAD per hour.
  • ESA Fines: Unlawfully punishing an employee for taking sick leave can result in Ministry fines starting at $250 CAD and costly wage restitution orders.

How Long Does the Process Take?

Employees are required to notify you that they will be taking a sick day either before the shift starts or as soon as possible. If you request a doctor’s note, you must give the employee a reasonable timeframe to provide it-usually within a few days of returning to work. Remember that the three statutory sick days reset every year on January 1st and do not carry over into the next year.

What You Can vs. Cannot Ask For

Information RequestedIs it Legally Allowed?Reasoning
A doctor’s or nurse’s noteNoProhibited by the ESA (Bill 190) for the first 3 statutory sick days.
Expected date of returnYesNecessary for the employer to manage staffing.
Specific illness or diagnosisNoViolates personal medical privacy rights in all circumstances.

Frequently Asked Questions (FAQ)

Can I fire an employee if they refuse to provide a note?

If the employee is using their three statutory ESA sick days, you cannot require a doctor’s note at all, so they cannot be penalized or fired for refusing to provide one. For absences beyond these three days where a note is legally permitted, a blatant refusal to provide reasonable medical evidence may lead to disciplinary action, but immediate termination carries high legal risks.

What happens if the employee takes more than 3 sick days?

Once the three ESA-protected sick days are used, any further absences are not statutorily protected under this category. From the fourth day onward, or for non-ESA leaves, employers are legally permitted to request a doctor’s note to justify the absence, managed according to company policy.

Do part-time employees get the same sick days?

Yes. Under the ESA, part-time and full-time employees are both entitled to the exact same three unpaid sick days per calendar year, provided they have worked for you for at least two weeks.

Can a pharmacist write a sick note?

Under Ontario’s updated ESA rules, employers cannot require a medical note from any health practitioner-including doctors, nurses, or pharmacists-to justify the first three statutory sick days. You can only request alternative reasonable evidence, such as a self-attestation or a receipt for medication.

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