International students in Canada have certain rights and restrictions when it comes to working while pursuing their studies. 

Working Hour Restrictions: While studying, international students are generally limited to working a maximum of 20 hours per week during academic sessions to ensure they can focus on their studies. However, during scheduled breaks, such as summer or winter holidays, they are typically allowed to work full-time (up to 40 hours per week).

Post-Graduation Work Permit (PGWP): Upon completing their studies, international students may be eligible to apply for a Post-Graduation Work Permit. This work permit allows them to work in Canada for a period ranging from 8 months to 3 years, depending on the duration of their program of study.

It's important for international students to familiarize themselves with the specific work permit regulations and restrictions that apply to their situation. They should consult the Government of Canada's official website or seek guidance from their designated educational institution's international student office for the most accurate and up-to-date information regarding their working rights in Canada.