The political economy of unfunded public pension liabilities

This paper applies a public choice approach to the problem of unfunded pension liabilities and adopts the methodology of Congleton and Shughart (1990) to model under-funding of state-level public pension plans using the median voter theorem, along with the theory of "capture" by special interest groups, and a combined model of the two. With panel data from 2001 to 2009, the paper finds that the combined model provides the strongest explanation for the current levels of unfunded liabilities; hence, both median voter preferences and special interest group influence are affecting political outcomes. The special interest group model slightly outperforms the median voter model in direct comparisons.