Most existing estimates of the macroeconomic costs of AIDS, as measured by the reduction in the growth rate of gross domestic product, are modest. For Africa-the continent where the epidemic has hit the hardest-they range between 0.3 and 1.5 percent annually. The reason is that these estimates...

We consider a firm which pays a worker for his effort over several periods. The more the firm pays in one period, the wealthier the worker is in the following periods, and so the more he must be paid for a given effort. This wealth effect can induce an employer to pay little initially and more...

Democratic processes may not take the welfare of future generations sufficiently into account and thus may not achieve sustainability. We show that the dual democratic mechanism – rejection/support rewards (RSRs) for politicians and elections – can achieve sustainability. RSRs stipulate that...

Consider a firm which pays a (credit-constrained) worker for his effort over two periods. The more the firm pays in one period, the wealthier is the worker in the following period, and so the more he must then be paid for a given effort. We describe the profit-maximising contract under these...

We consider a firm which pays a worker for his effort over several periods. The more the firm pays in one period, the wealthier the worker is in the following periods, and so the more he must be paid for a given effort. This wealth effect can induce an employer to pay little initially and more...

Democratic processes may not take the welfare of future generations sufficiently into account and thus may not achieve sustainability. We introduce rejection/support rewards (RSRs) and show that a dual democratic mechanism-RSRs and elections-can achieve sustainability. RSRs stipulate that...