Canada has a special visa for live-in domestic servants, mostly used for European au pair girls or Caribbean chauffeurs, gardeners, etc. They are often underpaid and overworked.
A friend of mine was trained as a nurse, but working in a bar because she made more money there. She could not just immigrate to Canada and work as a nurse; we don't recognise the Chinese qualifications. Also, getting the Canadian license requires IELTS 6.5 overall and 7 on spoken; then you have to pass a test on nursing topics.
She was tempted by ads that offered, for a mere 3,000 rmb up front, to get her a job in Canada paying over 8,000 rmb a month (wow!) with free room & board. It would have been on the domestic's visa, in some household with an elderly family member needing nursing care.
I told her to avoid that. In Canadian terms, that's an appalling salary. If she really wanted a job like that in Canada, I'd ask around and could probably find one with better terms and I would not need the fat fee.
She did not take me up on that, or on my other offers. Instead she quit the bar, got married, and seems to be living happily ever after.