We show that incorporating defined benefit pension funds in an asset pricing model with incomplete markets improves its ability to jointly match the historical equity premium and riskless rate, and has important implications for risk sharing. We emphasize the importance of the pension fund's...

We study the valuation of a pension fund's obligations in a discrete time and space incomplete market model. The market's incompleteness stems from the non-replicability of the wage process that finances the pension plan through time. The contingent defined-benefit liability of the pension fund...

This paper uses stochastic simulations on calibrated models to assess the steady state impact of different pension arrangements in an environment where financial markets are less than perfect. Surprisingly little is known about the optimal split between funded and unfunded systems when there are...

This paper outlines some of the arguments for and against the funding of public pensions, with a view to establishing whether there is an economic basis for judging funding to be superior to pay-as-you-go (PAYG). It is argued that funding does not have a clear advantage, and the case for a shift...

This paper proves that the stock-bond portfolio choice of the Social Security trust fund is equivalent in general equilibrium to the tax treatment of capital income by the non-social security part of government. A larger [smaller] share of social security's portfolio invested in stocks is...

Social Security trust fund portfolio diversification to include some equities reduces the equity premium by raising the safe real interest rate. This requires changes in taxes. Under the hypothesis of constant marginal returns to risky investments, trust fund diversification lowers the price of...