One thing that's important to note at the outset is that pension funds are held in trust and are sacrosanct. They cannot be used for alternative purposes. That's true both for defined contribution pension plans and for defined benefit pension plans. When a company is taking a pension contribution off every paycheque, it's going into a dedicated account that actually continues to accrue value through the investment scheme that it's put through.
In the case of a defined benefit pension plan, whatever is in the plan is absolutely sacrosanct, as we indicated. It can't be used for other purposes. In the case of a defined contribution plan, that means that essentially the risk is being shared between the employer and the employee, so in an insolvency what is available to the individual employee is whatever was invested to date.
There isn't an unfunded portion, because essentially the way that a defined contribution plan works is that the contribution has been defined; it has been made every single time and, as we indicated, any unfunded pension contributions for the previous period of work need to be remitted as a superpriority, so whatever is in that fund is available and then gets distributed. Normally that happens as a purchase of annuities.
There are some mechanisms that have existed in a couple of insolvencies where potentially they've been allowed to be converted into other investment-accruing vehicles, but essentially, for a defined contribution plan, you have very strong protections in place, because there wasn't any expectation other than the fact that the market would return what the market returned. In the case of a defined benefit plan, that's not the case, obviously, because what was defined was the benefit, and that requires a certain level of market return to be able to get to that level.