I will start, and then my colleague from Finance can weigh in.
As I already noted, pension solvency requirements vary enormously province by province. They set the degree to which a company is actually required to be holding assets in trust for the purposes of its pensioners.
As my colleague noted—and I'll let her weigh in—at the federal level we have extraordinarily stringent requirements. A number of provinces set standards for pension solvency that are quite different. In some cases, they actually only require a company to be investing and holding in trust enough to allow for the pension to be on a going-concern basis. That presumes that they only need to pay out to their actives, whereas others have set much lower solvency requirements and have required it to be on a windup basis, which does leave some money in case the company actually goes insolvent.
The relationship between the pension solvency and insolvency is important because obviously what you have at the time of insolvency is going to be determined by what you were required by your pension regulator to have when you were alive and well as a company.
I will just turn to my Finance colleague to say how we deal with that federally.