There's only one province, one jurisdiction, in Canada that has mandatory pension insurance for private sector DB plans, and that is Ontario, with the PBGF. Otherwise, some countries have similar arrangements. Mr. Powell mentioned the United States and the PBGC. The United Kingdom has a pension protection fund as well.
The differences within Canada when there's insolvency of this sort are very clear: Pension plan members who happen to reside in Ontario have their benefits protected up to $1,500, while those members of the same plan who happen to reside outside of Ontario take the full brunt of the pension terms.