This paper investigates the optimal retirement of an individual in the presence of involuntary unemployment risks and borrowing constraints in a complete market with frictions. We use an intensity model and loading factors to illustrate the involuntary unemployment risks and frictions in...

There exists one potential source which has not obtained full treatment in the recent consumption literature: a negative wealth constraint (NWC). An economic agent who faces the NWC can borrow up to a certain proportion of the present value of labor income. We present an analytically tractable...

In this paper we generalize the following result of McDonald and Siegel (1986) on optimal investment: it is optimal for an investor to invest when project cash flows exceed a certain threshold. We have other results that refine or extend the result of McDonald and Siegel (1986) by integrating...

This paper presents an entrepreneurial optimal business plan in which optimal consumption and portfolio rules, and optimal exit strategy for an entrepreneur are jointly determined in the presence of undiversifiable idiosyncratic risk. We find that the entrepreneur is more likely to exit from her...

We find robust portfolio rules for ambiguity-averse fund managers in a financial market with proportional transaction costs. The model proposed in this paper permits a liquidity premium much bigger than those found by most empirical literature. Our liquidity premium is much bigger when using...