English, Article, Journal or magazine article edition: A Simple Model of Multiple Equilibria Based on Risk James S. Costain

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Bookmark: http://trove.nla.gov.au/version/154078
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • A Simple Model of Multiple Equilibria Based on Risk
Author
  • James S. Costain
Physical Description
  • preprint
Notes
  • This paper shows how risk may aggravate fluctuations in economies with imperfect insurance and multiple assets. A two period job matching model is studied, in which risk averse agents act both as workers and as entrepreneurs. They choose between two types of investment: one type is riskless, while the other is a risky activity that creates jobs. Equilibrium is unique under full insurance. If investment is fully insured but unemployment risk is uninsured, then precautionary saving behavior dampens output fluctuations. However, if both investment and employment are uninsured, then an increase in unemployment gives agents an incentive to shift investment away from the risky asset, further increasing unemployment. This positive feedback may lead to multiple Pareto ranked equilibria. An overlapping generations version of the model may exhibit poverty traps or persistent multiplicity. Greater insurance is doubly beneficial in this context since it can both prevent multiplicity and promote risky investment.
  • Multiple equilibria, imperfect insurance, matching, prudence, temperance, precautionary saving, portfolio choice
  • RePEc:upf:upfgen:407
Language
  • English
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