Quite a bit of my university work in the early 2000s revolved around studying and modeling pension-type retirement plans, primarily in the United States (Chicago and Philadelphia mostly come to mind), but a little in foreign countries. While EU pensions tend to be in worse positions, it's a distinction without a difference: Pension reform is basically impossible. Catastrophic bankruptcy and refusal to pay benefits is coming to a theatre near you, because the political will to even begin meager cuts (and so-called "drastic" cuts are indeed merely meager) does not exist.
Politicians who propose meaningful cuts to pensions are guaranteed a single term in office while the candidates waiting in line promise to keep the Ponzi scheme going.