The optimality of age-based lockdown policies.

This paper studies an age-based lockdown that keeps over-60 workers at home as policy response to COVID-19 pandemic in a sample of thirty countries of the European single market. Three main policy issues are addressed, and the results can be summarized as follows. First, age-based lockdown policies are associated with limited output losses and, therefore, are an efficient strategy to limit the spread of the virus in a pandemic, especially in presence of strong age-dependent fatality rates. Second, lockdown policies generate substantial spillover effects; hence, international policy coordination avoiding that too many countries are in lockdown contemporaneously or that such coordination takes place across the countries with the highest integration of over-60 workers along GVCs may be helpful in reducing disruptions. Third, non-targeted lockdowns are much more costly than age-based ones; therefore, other things equal, age-based policies should always be preferred to non-targeted ones. Our analysis also suggests that, in our sample, the over-60 workers are relatively more numerous in sectors where the value added and the integration in GVCs is lower; this feature should be kept in mind in the design of other policies as it might play an important role.

Global supply chains in the pandemic.

We study the role of global supply chains in the impact of the Covid-19 pandemic on GDP growth using a multi-sector quantitative framework implemented on 64 countries. We discipline the labor supply shock across sectors and countries using the fraction of work in the sector that can be done from home, interacted with the stringency with which countries imposed lockdown measures. One quarter of the total model-implied real GDP decline is due to transmission through global supply chains. However, "renationalization" of global supply chains does not in general make countries more resilient to pandemic-induced contractions in labor supply. This is because eliminating reliance on foreign inputs increases reliance on the domestic inputs, which are also disrupted due to nationwide lockdowns. In fact, trade can insulate a country imposing a stringent lockdown from the pandemic-shock, as its foreign inputs are less disrupted than its domestic ones. Finally, unilateral lifting of the lockdowns in the largest economies can contribute as much as 2.5% to GDP growth in some of their smaller trade partners.

The Economic and Long-Term Health Consequences of Canadian COVID-19 Lockdowns.

To prevent exponential spread of COVID-19, many governments restricted economic activity through lockdowns. We model these restrictions as shocks to productivity by sector and trace total equilibrium effects across the economy using techniques from production network economics. We combine this economic model with an epidemiological model of income shocks to long-term health. On both long-run health and economic grounds, it is better to keep upstream sectors such as transportation, manufacturing, and wholesale open than consumer-facing sectors such as retail and restaurants.

Pour enrayer la propagation exponentielle de la COVID­19, maints gouvernements ont restreint l'activité économique en procédant à des confinements d'activité. Nous modélisons ces restrictions comme des chocs subis par la productivité dans différents secteurs d'activité et en suivons les répercussions sur l'équilibre économique global, grâce à des techniques inspirées de l'économie des réseaux de production. Nous associons ce modèle économique à un modèle épidémiologique d'incidence des chocs de revenu sur la santé à long terme. Tant sur le plan de la santé à long terme que sur le plan économique, il est plus avantageux de maintenir en activité les secteurs en amont, comme le transport, la fabrication et le commerce de gros, que les secteurs de la consommation directe, comme le commerce de détail et la restauration.

COVID-19 and Alternative Conceptualisations of Value and Risk in GPN Research.

The COVID-19 pandemic represents a major disturbance that has rippled across the world's population, states, economy, and central nervous system or global production networks transforming the traditional roles of states, firms, individuals/consumers, and geographies of production. This paper offers a critical and context-based approach to understanding globalization and localization by challenging the conceptualization of 'value' and 'risk' within the current global production networks framework as well as identifying key operational strategies in risk management and national security. An analysis of the adaptation strategies of the GPNs of 91 companies identifies the role played by four different forms of value in configuring production networks. This is to balance 'economic value' with non-price-based sources of value and alternative values. The analysis underscores the critical role of the state in ensuring national and human security as well as its increasing power as a key actor in GPNs and the global economy.