A dynamic model with credit under limited commitment is constructed, in which limited memory can weaken the effects of punishment for default. This creates an endogenous role for government debt in credit markets, and the economy can be non-Ricardian. Default can occur in equilibrium, and government debt essentially plays a role as collateral and thus improves borrowers' incentives. The provision of government debt acts to discourage default, whether default occurs in equilibrium or not.

ABSTRACT We investigate a potential selection benefit of stock-based compensation for rank-and-file employees, whose pay under this compensation form is insensitive to their individual efforts. We use a laboratory experiment to demonstrate that individuals with higher levels of dispositional optimism are more likely to choose compensation that is contingent on a company's future stock price than to choose fixed pay, even after controlling for the individual's risk preferences. Furthermore, compared to participants selecting fixed pay, those selecting stock-based compensation also perform better on a challenging problem-solving task, a result that we show is due to their higher levels of dispositional optimism. Collectively, we demonstrate that stock-based compensation can have productivity-enhancing effects, even if stock prices are completely insensitive to individual efforts. In doing so, we provide a partial explanation for the puzzling prevalence of stock-based compensation plans at the rank-and-file level and contribute to the broader contract-selection literature.