The open work permit is a type of work permit that allows foreign workers to work for any employer in Canada, without having to obtain a specific job offer. The open work permit is generally issued to foreign workers who are already in Canada and who meet certain eligibility criteria, such as spouses of temporary residents or university graduates. Open work permit holders can work for any employer in Canada during the term of their permit.

The closed work permit is a type of work permit that allows foreign workers to work for a specific employer in Canada, which is named on their permit. Foreign workers must have a job offer from a Canadian employer before they can apply for a closed work permit. The closed work permit is generally valid for the duration of employment specified on the job offer.

The Post-Graduation Work Permit is a type of work permit that allows international students who have graduated from a Canadian educational institution to work in Canada to gain work experience. Post-graduation work permit holders can work for any employer in Canada for up to three years, depending on the length of their study program.