the only worry in mind is the unemployment rate (CA already reached the UE marker rate for 2008 recession i.e. 8% or more) and if you look at my chart, in ROH 142, it took almost a decade to bring down the rate to 5-6%.
GC might be forced and out of options in coming weeks to delay or potentially hold skilled worker immigration streams.
We must also factor that this employment is due to temporary closure of many large scale employers. Tim Hortons for example. So I believe once the restrictions are lifted, the rebound will not take that long for at least such employers