Canadian Sick Leave Rules: Start With the Jurisdiction
Canada does not have one universal sick-leave rule. The applicable process can depend on whether your job is federally or provincially regulated, the province where you work, your length of employment, a collective agreement, an employer benefit plan, and the kind of absence involved. This guide is a starting point for checking the right official source; it is not legal advice.
The Short Answer on Sick Notes
Do not assume that a doctor’s note is required for every absence or that one automatically determines leave, pay, benefits, accommodation, or job protection. In several jurisdictions, legislation limits when an employer may ask for a health-practitioner note for a short health-related absence. A workplace, union, benefits plan, or school may have a separate process.
If you are unwell, report the absence through the required workplace channel first. Then check the applicable government rule and any workplace policy before arranging documentation.
High-Interest Rules: Alberta, Ontario, British Columbia, and Federal Work
| Jurisdiction | Starting point | Documentation context |
|---|---|---|
| Alberta | Eligible employees may have personal and family responsibility leave or long-term illness and injury leave under different statutory conditions. | Alberta's statutory leave rules and a workplace process both matter. Long-term leave has a distinct medical-certificate process. |
| Ontario | ESA sick leave is up to three unpaid, job-protected days for eligible employees. | Employers cannot require a medical certificate to establish ESA sick-leave entitlement, although other reasonable evidence may be relevant. |
| British Columbia | Eligible employees may have paid and unpaid illness or injury leave after the statutory eligibility period. | For the first two health-related absences of five days or fewer in a calendar year, section 49.2 prevents an employer from requesting a health-practitioner note. Later requests remain subject to the reasonably-sufficient-proof standard. |
| Federally regulated work | Medical leave under the Canada Labour Code has its own paid and unpaid components. | The Code restricts when a medical certificate can be requested; check the current federal interpretation for the exact threshold and process. |
Province and Territory Sources
Use the official employment-standards source for the jurisdiction where the work is performed. The most reliable answer is usually in the current statutory guide or the collective agreement, not a general online rule.
- Alberta job-protected leaves
- Ontario ESA sick leave
- BC ESA section 49.2, Sick Note Not Required
- Canada Labour Code medical leave
- Prince Edward Island sick leave
- Newfoundland and Labrador labour standards FAQs
- Nova Scotia medical certificates and employee absence
- New Brunswick Employment Standards Act
When Medical Documentation May Be a Separate Question
Benefits claims, return-to-work decisions, accommodation, workplace injury claims, and academic consideration often have their own forms, deadlines, and decision-makers. A medical note may support an application when clinically appropriate, but it does not guarantee a workplace, benefits, insurance, or academic outcome.
MedLetter only reviews requests for short-term acute illness documentation, generally one to five days, such as cold, flu, food poisoning, or stomach bug. It does not provide documentation for chronic conditions, mental-health leave, disability, workplace injury claims, surgical recovery, or extended absences.
Frequently Asked Questions
Do I need a sick note for one day off work?
It depends on your jurisdiction and the circumstances. Ontario and BC have statutory limits on health-practitioner note requests in defined short-absence situations. Alberta and federal work have different rules. Start with the official source and workplace reporting policy.
Can an employer ask for my diagnosis?
Medical privacy and employment-law questions are fact-specific. Ask what information is required for the process at hand and seek employment or legal guidance if a request appears excessive.
Is an online medical note always accepted?
A physician may issue documentation after an appropriate assessment, but the employer, insurer, school, or benefits administrator applies its own process. Do not treat any note as a guaranteed outcome.
What should I do after calling in sick?
Report the absence through the required channel, preserve the message, review the applicable policy, and check whether any statutory documentation restriction applies. If you have a genuine short-term acute illness and documentation is clinically appropriate, you can request physician review.
Related: How to Submit a Sick Note to an Employer | EI Sickness Benefits and Medical Certificates | Can an Employer Require a Sick Note?
Last reviewed: August 2026. For legal advice about a specific employment situation, consult the relevant employment-standards office, union, or qualified professional.