That's one of the reasons we impose a time limit on the temporary foreign worker. The labour market impact assessment for a low-wage worker is generally one year in duration. If the business circumstances changed dramatically, and there were unemployed Canadians in that space, the employer would need to reapply. Then we would look at such information as the previous record of employment. As the deputy noted, we use employment insurance data as part of our review of applications, looking back to see if that employer in the recent past has laid off Canadians.
On October 31st, 2017. See this statement in context.