You may be eligible for an open work permit if:

• you are a foreign student, have graduated from a designated educational institution and are eligible for the Post-Graduation Work Permit Program.

• you are a student and are no longer able to pay the cost of your studies (student without).

• you have a work permit related to a particular employer and are or may be the victim of violence in connection with your employment in Canada

• you have applied for permanent residence in Canada.

• you are a dependent family member of a person who has applied for permanent residence.

• you are the spouse or common-law partner of a skilled worker or a foreign student.

• you are the spouse or common-law partner of a participant in the Atlantic Canada Immigration Pilot Program.

• you are a refugee, an asylum seeker, a protected person or a member of their family.

• you are subject to a removal order that can not be enforced.

• you are a temporary resident permit holder.

• you are a young worker participating in special programs.

• In each of these situations, you must meet additional criteria to qualify.

In land Spouse/Common Law Sponsorship Open Work Permit:

The Spousal Sponsorship program is a subsection of the Family Class immigration category, under which a Canadian or permanent resident (the sponsor) may sponsor his or her spouse or common-law partner (the sponsored person) for Canadian permanent residence. Inland sponsorship is a type of spousal sponsorship available to couples who are already living together in Canada where the spouse/common-law partner has temporary status in Canada, either as a worker, student, or visitor.

Post-Graduation Work Permit (PGWP)

Foreign nationals currently in possession of a valid study permit and who are about to graduate from a post-secondary institution may apply for a postgraduate open work permit under the Post-Graduation Work Permit Program (PGWPP). An open work permit enables the foreign national to seek and accept employment, and to work for any employer for a specified period of time depending on the duration of the study program up to three years. An open work permit also exempts the foreign national’s employer from the requirement of obtaining a positive labour market impact assessment (LMIA) from Employment and Social Development Canada (ESDC), which is generally required to obtain a work permit. It can consider as a pathway to become permanent residence in Canada. To be eligible under this program, foreign nationals must:

-have continuously studied full-time in Canada for more than eight months.

-apply for work permit within 90 days of graduation of receiving written confirmation from the institute regarding completing the program.

-have a valid study permit at the time of applying for the work permit.

You can read more at https://www.canada.ca