Why do companies abuse their foreign workers?

In Canada, there is a significant public backlash against companies that hire temporary foreign workers (TFWs), partly because the mistreatment of TFWs across the country is well documented, and partly because of persistent anti-immigrant sentiment…. There have been many reports of workers who are forced to perform additional tasks without compensation or who do not receive appropriate holiday or overtime pay. These workers also frequently report unsafe working or living conditions, with threats of termination or deportation.