Congrats!!Updated timeline:
Application: July 27
Assessment: Aug 15
Awaiting Information: Aug 17
ADR? No.
DIP: Aug 24
Nomination: Aug 31st
It all revolves on 1) immigrants not taking jobs from Canadians, because that is not what they want, 2) Inviting qualified candidates, and 3) to avoid fraudulent cases (ex.: cases where someone decides to hire a bunch of fellow countrymen, family or friends from a country where you previously lived, as that is characterized as an immigration business and hurts and delays everyone's else applications).
Here is the answer you need: He must have 3 Canadians or PRs working for him FT (30 h/week), at the same conditions as you. It is not clear if it can change after you get nominated (1-3 months), but it makes sense that he maintains these conditions during the whole time from your PNP application to PR, something around 18 months.
When you get a nomination, if the conditions for your nomination change (example, you move, change employer, have a kid) you must communicate that to the federal government during all your application, and you might get rejected.
In this case, if the employer has 3 Canadians + you today, you are eligible. If you get the nomination and on the next day/month he has 4 Immigrants working for him, that would be a problem and your conditions for nomination are no longer valid, and the federal government might refuse your application. I don't know how they could verify that.
It would be good, in this case, if your employer has 4 FT Canadians, 1 as a backup.
What they do in cases like this is they hold your application for a while and keep contacting your employer.
I would say the best solution is sending additional documentation:
1) an honest letter of explanation saying employees go in and out fast, showing also that they profit the local average, otherwise they leave the job because the conditions suck, and that would raise flags,
2) documents showing how many employees got in and out of the company on the last 2-3 years to take an average and prove how long is the employment cycle
3) your employer could write a commitment to always hire new Canadians or PR in case the conditions change (keeping the proportion of 3 Canadians to 1 immigrants). So if it happens, they hire a new Canadian as soon as possible, and if someone assess your application later, neither you nor your employer will be found at fault.
4)The fact that it is in northern Ontario could weigh in your favor.
Vey well explain.
Thank you so much