American step-up and step-down default swaps under Lévy models

This paper studies the valuation of a class of default swaps with the embedded option to switch to a different premium and notional principal anytime prior to a credit event. These are early exercisable contracts that give the protection buyer or seller the right to step-up, step-down, or cancel the swap position. The pricing problem is formulated under a structural credit risk model based on Lévy processes. This leads to the analytic and numerical studies of several optimal stopping problems subject to early termination due to default. In a general spectrally negative Lévy model, we rigorously derive the optimal exercise strategy. This allows for instant computation of the credit spread under various specifications. Numerical examples are provided to examine the impacts of default risk and contractual features on the credit spread and exercise strategy.     

Elderly empowerment,fertility, and public pensions

The economic role of elderly people is underestimated in the context of the debate on pension reforms. This is because, as healthy life expectancy increases, the elderly become more active not only in the labor market but also in household production. Using a three-period overlapping-generations model in which grandparents allocate time between labor and informal childcare (“grandparenting”), we analyze the interaction among grandparenting, fertility, elderly labor, and public pensions. We obtain two analytical results. First, increasing the pension contribution rate increases grandparenting. Second, elderly labor force participation rates are negatively (positively) related to the fertility rates among countries with small (large) public pensions. The nonlinear relationship between elderly labor and fertility is empirically supported.

     

The geographical dimension of global retailing

The globalization of twenty well-known retailers and fast food operators is measured by two geographical indices, dispersion and locus, based on various measures of activity. Both are compared with similar indices based on the GDP. An attempt to explain varying degrees of globalization with own manufacturing, store ownership and company age fails. This leads to increasingly ‘soft’ verbal, even personalized, explanations.     

Testing the incentive effects in tournaments with a superstar

This paper studies the effects of the levels and the structure of prizes on the efforts of agents with heterogeneous ability in a tournament model. In particular, we examine how the presence of a highly able agent affects the effort levels of other agents as well as the effects of the total and the marginal prizes. Using panel data from the Japan Golf Tour, we estimate the effects of the presence of a superstar, and the size of the total and marginal prizes on the scores of professional golfers. We find that the presence of a superstar adversely affects the scores of the other players; that the larger the size of the total prize, the better are the scores; and that the larger the marginal prizes that players face at the end of the third round, the better the scores they achieve in the final round.     

Incentives and Product Variety in an Aging Economy

This paper presents a new method to clarify intergenerational effects of the demographic change in industrialized countries, i.e., the trend of aging. Recognized effects of aging are twofold; a disincentive effect and a product variety effect. The results are consistent with the empirical findings in Cutler et al. (1990). With the evidence, our model predicts that diminished fertility represents a problem rather than an opportunity, and that diminished mortality represents an opportunity rather than a problem.     

Sibling Rivalry and Strategic Parental Transfers: A Comment

This note shows that Proposition 5 in Chang and Weisman (Southern Economic Journal 71:821–36) contains a mistake. Although not affecting the paper's basic intuition, our result shows that the parental transfer under the noncooperative game could be less than under the cooperative one if the children oversupply family services.