Two of the biggest abusers of the TFW program were Tim Hortons and Canadian Tire. They even lobbied government to expand the program / weaken its protections.

Two anecdotes to highlight how bullshit these companies are -- I'm not sure if they still do it, but for a while Tim Hortons had a "Tim Hortons" education/certification program in places like the Philippines. To meet TFW local job-hiring requirements, they'd advertise job openings that required that education, and when surprisingly no one came forward, they'd be able to import workers.

For Canadian Tire, I've previously worked with someone who was related to the owners of a couple Canadian Tires in Alberta. They effectively forced the TFW's to live 10 people to a house. If they didn't agree to live in the houses, the owners could drum up excuses to fire the TFW / have them deported. Those houses were owned by the owners of the Canadian Tire - the TFW's slave-rent paid off multiple mortgages. The owners of this store, owned a sub-penthouse in one of the most expensive condo towers in Vancouver, where they had a few $100k sports cars parked year round, though they only visited it for a weekend or two per year. All wealth generated off of indentured slaves. All seemingly allowed by the TFW program.