A valid Ontario sick note should include: the physician's name and CPSO registration number, date of assessment, recommended absence period, confirmation of medical assessment, and signature. Your diagnosis is private and should NOT be included unless you consent.
A legitimate sick note in Ontario must contain:
Ontario's PHIPA and Human Rights Code protect the following from disclosure:
The Ontario ESA refers to a 'certificate of a qualified health practitioner' but does not specify what it must contain beyond confirming the need for leave. This means your employer cannot demand specific medical details beyond confirmation of illness and duration.
If you're requesting workplace accommodation (not just a sick day), your employer may reasonably request information about functional limitations, what you can and cannot do at work. This is different from a diagnosis and should be provided on a separate accommodation form, not a sick note.
MedLetter provides Ontario sick notes that include all legally required elements while protecting your privacy. CPSO-registered physician credentials, assessment confirmation, absence dates, official letterhead, and verification ID. No diagnosis disclosed. $49, same day.