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Using an integrated epi-econ model, we compute the value of vaccines for Covid-19, both under a planner’s solution and in competitive equilibrium. The specific model, developed in Boppart, Harmenberg, Hassler, Krusell, and Olsson (2021), factors in not just value-of-life aspects along with standard economic variables but also the value of leisure activities that rely on a social component. We find that the societal value of vaccination is large; we estimate that, translated into monetary terms, the value of vaccinating one young individual in the competitive equilibrium is $17,800. Externalities are large: less than half the societal value is internalized by individuals (assuming that they act purely in their self-interest). Finally, behavioral responses are important, with a substantial share of the value of vaccines being attributed to people enjoying more socially-oriented leisure when more people are vaccinated.

We adapt the wage contracting structure in Chari (1983) to a dynamic, balanced-growth setting with recontracting as in Calvo (1983). The resulting wage-rigidity framework dampens income effects in the short run, thus allowing significant responses of hours to aggregate shocks. In reduced form, the model dynamics are similar to that in Jaimovich and Rebelo (2009), with their habit parameter replaced by our probability of wage-contract resetting. That is, if wage contracts are reset frequently, labor supply behaves in accordance with King, Plosser, and Rebelo (1988) preferences, whereas if they are never reset, we obtain the setting in Greenwood, Hercowitz, and Huffman (1988). (JEL E24, J22, J23, J24, J31, J41)

Private consumption demand falls in response to increased unemployment risk during a recession, as households increase their precautionary savings and postpone irreversible durable investments. The postponement effect is seven times as large as the precautionary-savings effect in a calibrated bufferstock savings model. In consequence, anticipation of future unemployment risk is more important than realized unemployment shocks in accounting for durable expenditure dynamics during recessions, while the opposite is true for nondurables. The importance of anticipation of future unemployment risk also means that having many 'hand-to-mouth' households, who do not respond to changes in income risk, significantly dampens the demand response for durables to an adverse labor market shock. We find that the model elasticities of durable and nondurable expenditures with respect to unemployment risk are close to what we estimate in micro survey data. * This paper supersedes an earlier version entitled "Durable Expenditure Dynamics under Time-Varying Income Risk". We are very grateful for helpful comments and critiques from

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