Cfh, my post #12 was an actual system in an actual airline. That airline no longer exists, though not due to the seniority system!
My post #31 offers a hypothetical but probable alternative if you don't press your case.
If you go to
www.afap.org.au it will lead you to various pilot awards made under Australian legislation. Just how applicable any of this would be in Canadian law, dunno, but it might be useful background.
I wish you luck in your endeavours. Nil bastado carborundum.