I think giving that information from the very beginning, even before a caregiver comes to Canada, would be a great start to making sure they know they have those rights and that they are protected. The system should also be enabled to reduce wait times so they don't feel they are stuck in a home and can change without risking their permanent residency in the long run.
Evidence of meeting #18 for Citizenship and Immigration in the 40th Parliament, 2nd session. (The original version is on Parliament’s site, as are the minutes.) The winning word was caregivers.
A recording is available from Parliament.