The public health response to COVID-19 in many countries has involved strict restrictions on movement and economic activity which threaten the livelihoods of economically vulnerable households. In response, governments are adopting emergency economic measures to provide households with some safety net. We provide an overview of the policies that could form a comprehensive social protection strategy in low-income and middle-income countries, with examples of specific policies that have been adopted. Our core argument is that these countries can cast an emergency safety net with extensive coverage if they use a broader patchwork of solutions than higher-income countries. These strategies could include expanding their social insurance system, building on existing social assistance programmes, and involving local governments and non-state institutions to identify and assist vulnerable groups who are otherwise harder to reach.

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The key assumption in regression discontinuity analysis is that the distribution of potential outcomes varies smoothly with the running variable around the cutoff. In many empirical contexts, however, this assumption is not credible; and the running variable is said to be manipulated in this case. In this paper, we show that while causal effects are not point identified under manipulation, they remain partially identified under a general model that covers a wide range of empirical patterns. We derive sharp bounds on causal parameters for both sharp and fuzzy designs under our general model, and show how additional structure can be used to further narrow the bounds. We use our methods to study the disincentive effect of unemployment insurance on (formal) reemployment in Brazil, and show that our bounds remain informative, despite the fact that manipulation has a sizable effect on our estimates of causal parameters.

This paper evaluates with numerical computations the respective merits of two competing notions of coalition stability in the standard global public goods model of climate change. To this effect it uses the CWS integrated assessment model. After a reminder of the two game theoretical stability notions involved-core-stability and internal-external stability-and of the CWS model, the former property is shown to hold for the grand coalition if resource transfers of a specific form between countries are introduced. The latter property appears to hold neither for the grand coalition nor for most large coalitions whereas it is verified for most small coalitions in a weak sense that involves transfers. Finally, coalitions , stable in either sense, that perform best in terms of carbon concentration and global welfare are always heterogeneous ones. Therefore, if coalitional stability is taken as an objective, promoting small or homogeneous coalitions is not to be recommended.

The most common forms of government-mandated job displacement insurance are Severance Pay (SP; lump-sum payments at layoff) and Unemployment Insurance (UI; periodic payments contingent on non-employment). While there is a vast literature on UI, SP programs have received much less attention, even though they are prevalent across countries and predominant in developing countries. In particular, little is known about their insurance value, which critically relies on workers' ability to dissave the lump-sum progressively to smooth consumption after layoff. Using de-identified high-frequency expenditure data and matched employee-employer data from Brazil, we find that displaced workers eligible for both UI and SP increase consumption at layoff by 35% despite experiencing a 17% consumption loss after they stop receiving any benefits. Moreover, this sensitivity of consumer spending to cash-on-hand is present across spending categories and sources of variation in UI benefits and SP amounts. We show that a simple structural model with present-biased workers can rationalize our findings, and we use it to illustrate their implications for the incentive-insurance trade-off between SP and UI. Specifically, the insurance value of SP programs-or of other policies that provide liquidity to workers at layoff-can be severely reduced when consumption is over-sensitive to the timing of benefit disbursement, undermining their advantage in terms of job-search incentives. Our findings highlight the importance of the difference between SP and UI in their disbursement policy, and shed new light on the need for job displacement insurance in a developing country context.