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Well-known empirical puzzles in international macroeconomics concern the large divergence of equilibrium outcomes for consumption across countries from the predictions of models with full risk sharing. It is commonly believed that these risk-sharing puzzles are related to another empirical puzzle-the home-bias in equity puzzle. However, we show in a series of dynamic models that the full risk sharing equilibrium may not require much diversification of equity portfolios when there is price stickiness of the degree typically calibrated in macroeconomic models. This conclusion holds under a range

This paper analyzes the impact of ethnic heterogeneity and military conflict on the degree of regional consumption risk-sharing in Ukraine. Ethnicity and violent conflicts can influence risk-sharing e.g. through social capital, ethnic fractionalization, migration, and remittances. The sample consists of 25 Ukrainian oblasts and covers the highly volatile period from 2003 to 2016. Our results suggest that the degree of consumption risk-sharing is comparably high; between 70 and 80 percent on average. Moreover, consumption risk-sharing is significantly higher in the regions with a large Russian minority, which are enjoying special treatment by Russia. By contrast, the degree of financial development, as proxied by deposit and loan share in GRP, does not significantly affect the regional degree of consumption risk-sharing. Furthermore, we apply spatial models to control for spatial dependence across regions. Results are confirmed and it is shown that spatial correlation is important. Finally, we show that the recent geopolitical conflict in east Ukraine changed the regional degree of consumption risk-sharing.

What are the prospects that risk-sharing in EMU will ever attain the levels in the US? So far as risk-sharing in the US depends on interregional transfers through the budget of the federal government, those prospects are poor. So far as the risk-sharing in the US takes place though market channels, they are much better. This article addresses the theory & evidence on the subject. The evidence would indicate that EMU still lags far behind the US as regards the pooling of risks through portfolio diversification. But there already seems to be little to distinguish the euro area from the US in the ability to borrow to smooth shocks. Thus, some extra risk-sharing should already be taking place in the euro area through this channel. But how much? Further, there is also evidence that the progress of European economic & monetary integration over the last decade has increased the symmetry of business cycles. But this evidence is difficult to interpret. It could even be a sign of remaining capital-market imperfections. With respect to the theoretical aspects, one of the issues in the article is the adequacy of the general framework that Asdrubali, Sorensen & Yosha have proposed for dealing with all of these questions. 5 Tables, 40 References. Adapted from the source document.

Risk-sharing is a fundamental form of economic behaviour. It
can occur through formal insurance markets, informal family
arrangements, community support, legal institutions (such as
bankruptcy), or government tax-transfer programmes. Whatever the
mechanism used to share risk, the extent of risk mitigation can greatly
influence the welfare of all members of society. Understanding the
degree of risk-pooling in society is important for policy-makers, since
insufficient risk pooling may provide a basis for government
intervention. Alternatively, if risks are being pooled adequately
without the help of the government, government risk-sharing may be
redundant. This study explores the implications of the risk-sharing
model, namely, that households which pool risks, either through formal
markets or informal personal arrangements, experience correlated changes
in their consumption through time. It conducts tests of within-village,
across-village, within-district, and across-district risksharing using a
new Pakistani panel data set—the Pakistan Food Security Management
Survey—collected by the International Food Policy Research Institute
(IFPRI), Washington, D. C. Unlike studies for other Less Developed
Countries (LDCs), these tests find very little or almost no evidence of
risk-sharing among unrelated individuals within- and across-villages in
the rural sector of Pakistan.

This paper empirically examines the degree of regional consumption risk‐sharing in China. It finds that less risk‐sharing is taking place across Chinese provinces than across US states and Canadian provinces, although its extent across the latter is somewhat higher than across the national boundaries of industrial countries. Specifically, about half of the fitted annual variation in provincial consumption growth is common to all Chinese provinces, compared with more than two‐thirds (less than one‐third) in the case of US states and Canadian provinces (G‐7 countries). My estimates reveal that Chinese households would be willing to pay dearly to insure their consumption against idiosyncratic shocks.

Empirical work in labor economics has focused on rent sharing as an explanation for the observed correlation between wages and profitability. The alternative explanation of risk sharing between workers and employers has not been tested. Using a unique panel data set for four African countries, Authors find strong evidence of risk sharing. Workers in effect offer insurance to employers: when firms are hit by temporary shocks, the effect on profits is cushioned by risk sharing with workers. Rent sharing is a symptom of an inefficient labor market. Risk sharing; by contrast, can be seen as an efficient response to missing markets. Authors evidence suggests that risk sharing accounts for a substantial part of the observed effect of shocks on wages.