The Finnish-Canadians get a mention in this labour issues piece by Walkom. But the Finns (long ago) got a landed immigrant status on arrival, the new Chinese temporary miners probably would not qualify in the Canadan Experience Class.
Anyhow, Walkom could have added that back then the recruitment of Finns "backfired", the Finns organized themselves and created values for the Canadian labor scene - that prevailed for decades.
Some years ago several immigrant organizations campaigned against the increasing numbers of work permit holders arriving for temporary stays in Canada. Before the 2011 election the government then changed the rules and enacted a five-year cap on wp-based employment. Eligible specialists could then remain through the Canada Experience Class, but low-end jobs are not included.