CNESST =/= Canadian law
As per your link the indemnity is based on if you had your 16 weeks notice or not.
Vacation pay isn't a layoff indemnity, it's separate and something you're entitled to no matter the reason why you stop working for your employer.
Also the Quebec law link was added as an edit which is why I thought you were in BC (since you mentioned it).
Thanks for proving my point for me anyway.
As for why I'm so hellbent on proving you wrong? Because I'm tired of people not understand the levels of government and their powers and I think there's a whole lot wrong with our country that can be attributed to it.