I would agree that there is not a uniform code across Canada because of the jurisdictional divisions between sections 91 and 92 of our Constitution. However, labour law experts have noted that there is a core set of rights across this country with respect to how unions become certified, successor rights, and other matters.
So although the provincial jurisdictions and the federal government have had a different jurisdiction in creating their own models, they have modelled each other across the country with respect to how unions become organized, how labour disputes are conducted, and how other rights are treated.