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 | This article is missing information about historical examples of supply shocks. (August 2022) |
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A supply shock is an event that suddenly increases or decreases the supply of a commodity or service, or of commodities and services in general. This sudden change affects the equilibrium price of the good or service or the economy's general price level.
In the short run, an economy-wide negative supply shock will shift the aggregate supply curve leftward, decreasing the output and increasing the price level.[1] For example, the imposition of an embargo on trade in oil would cause an adverse supply shock, since oil is a key factor of production for a wide variety of goods. A supply shock can cause stagflation due to a combination of rising prices and falling output. The 1973 Oil Crisis is often used as the exemplar case of a supply shock, when OPEC restrictions on production and sale of petroleum resulted in fuel shortages throughout the developed world.
In the short run, an economy-wide positive supply shock will shift the aggregate supply curve rightward, increasing output and decreasing the price level.[1] A positive supply shock could be an advance in technology (a technology shock) which makes production more efficient, thus increasing output.
- ^ a b Robert Hall, Marc Lieberman (2012), Economics: Principles and Applications, Cengage Learning, p. 849, ISBN 978-1-111-82234-7