I ran across this study of housing provided to migrant farmworkers in BC's Okanagan Valley recently. The gist is that there is significant variability in the accommodations, some of the accommodation is substandard and that migrant workers have few avenues to seek recourse.
The topic of migrant workers was also examined in the Canadian Medical Association Journal. Migrant workers were found healthy upon arrival, but limited access to health care, substandard working and living conditions, isolation, and language difficulties were threats to maintaining good health. These barriers also affected migrant agricultural workers.
-- Bob Barnetson