Add Comment Question: Can my boss require a doctors note for every sick day? I suffer from migraines and have for many years. Answer: Thank you for your question. We have an article on our website on this exact issue: https://stlawyers.ca/blog-news/sick-notes-ontario-rights-for-employees/ If your employer continues to give you a hard time because of your absences, do not hesitate to contact us at the number below and schedule a consultation with one of our employment lawyers. Your Comment * Your Email * Your Name * Your City Note, your name, city and email is not displayed on the website. It is used to notify you that we have approved your comment.