MORE PUBLIC PENSION PROBLEMS, THIS TIME IN PITTSBURGH: City Officials May Need Hail Mary Pass As Unfunded Liability Hits $700 Million. “By relying on outdated actuarial tables, making only minimum payments, and failing to limit benefits as the number of active workers paying into the plans fell, Pittsburgh has accumulated a $700 million unfunded liability, and its 29.5% funding level is among the lowest in the U.S.”