People walk down Main Mall with Flagpole Plaza in the background on the UBC Vancouver campus.

Tens of thousands of international students who were granted postgraduate work permits will see their visas expire this year, casting doubt on their futures in Canada and leading economists to wonder if some will stay in the country as undocumented residents.

There were 31,610 people with valid postgraduate work permits in the country as of Sept. 30, and those visas will expire by Dec. 31, according to data from Immigration, Refugees and Citizenship Canada (IRCC) provided to The Globe and Mail.

Those numbers have recently come under scrutiny by economists and immigration experts because it’s unclear how many temporary residents remain in the country after their visas expire, adding to the und

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