I have heard 6 weeks but there's even no guarantee that you will get a positive LMO. You can only hope for the best. What class did you apply for PR under? Are you under the QSW class? You could talk to Quebec immigration and ask them if there is a chance of some kind of interrim work permit without an LMO. I have heard that AINP helps people who have been nominated to get a work permit without LMO. It never hurts to ask.
I applied through Quebec, the process requires a certificate of selection from the province, is that what you call QSW? (I'm not sure it's the same because I filled all the forms in French). I am French and I intend to stay in Quebec, that's why I applied for the Quebec program.
So you think there is a chance that Quebec immigration helps me get an interrim work permit?
It would be logical, especially if I ask once I already have my certificate of selection.