I can see how that is possible. What I don't see is how it can be avoided by putting more money into the pension fund previously. Wouldn't that just precipitate the fiscal crisis at an earlier time?
Some pension funds took a "contribution holiday" during the bull market of the late 20th century. If they had put in the money they were supposed to put in then, they wouldn't be underfunded now, or at least not to the extent that they are. So for those systems, no, it wouldn't have precipitated a financial crisis at an earlier time. It might have made it impossible to grant a tax reduction or increased funding to some other area of government—whatever was done with the money instead of putting it into the retirement system. Even with a system that has been paying all contributions as promised, I think an increase in contribution levels in the past would be less likely to precipitate an economic crisis than having to come up with the money to meet large and ongoing shortfalls in the future. Compare it to your personal finances. What's more likely to cause an economic crisis in your household, having ten or fifteen years to save up for a new car, or having to come up with the cash to buy one on short notice, during an economic downturn when your wages have been frozen or cut?
The premise of this discussion about the soundness of pension funds seems to be that income from the fund is somehow free, while other moneys the state may use to pay pensioners are costly. I don't get that.
I don't understand what you mean by an assumption that the income from the fund is free. I think it is more a feeling—by employees, that we were promised a certain level of pension benefits, and by taxpayers that there has been an implied promise that employee pensions would be fully funded by the contribution rates built into the pension plan. If the pension plan then asks for more money, the taxpayers are understandably upset—they thought they had already paid for the pensions with their past taxes.
IMO, if pension fund trustees or public officials play "fiscal games", as you called it, they are failing in their responsibilities to both the employees (by risking that there will not be enough money to pay the promised pension benefits when they retire)
and the taxpayers (by mismanaging what the taxpayers have already paid for this purpose and which, in a soundly designed pension plan, would have been enough to pay the promised benefits without increasing taxes later on). But I think there have also been a lot of unexamined assumptions in the past that are now being pulled out into the light, and people don't like what they are seeing. As an employee, I never gave a thought to whether the pension system was adequately funded, until it wasn't. And as a taxpayer, it never occurred to me that officials might be making promises about future benefits, without allocating the funds to fulfill them.