Changes in accumulated retirement savings, particularly in employer-sponsored defined contribution (DC) plan balances, differ by worker’s earnings levels. Earnings shocks, portfolio diversification, and employer contributions to worker’s DC plans affect retirement savings for lower earners...

We present a solution to the considered in [5] and [22] optimal stopping problem for some jump processes. The method of proof is based on reducing the initial problem to an integro-differential free-boundary problem where the normal reflection and smooth fit may break down and the latter then be...