According to the Immigration, Refugees and Citizenship Canada website, you may be eligible to work in Canada while studying. If you’re able to work during your studies, it’ll say so in the conditions on your study permit. You must also meet all the other requirements. You can only start working in Canada when your study program has started. You can’t work before you start your studies.
Please refer to Immigration Canada’s website for more details about work off campus as an international student.