A supply shock is an event that suddenly increases or decreases the

supply Supply or supplies may refer to: *The amount of a resource that is available **Supply (economics), the amount of a product which is available to customers **Materiel, the goods and equipment for a military unit to fulfill its mission *Supply, as ...

of a

commodity In economics, a commodity is an economic goods, good, usually a resource, that specifically has full or substantial fungibility: that is, the Market (economics), market treats instances of the good as equivalent or nearly so with no regard to w ...

service Service may refer to: Activities * Administrative service, a required part of the workload of university faculty * Civil service, the body of employees of a government * Community service, volunteer service for the benefit of a community or a ...

, 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. 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 In economics, factors of production, resources, or inputs are what is used in the production process to produce output—that is, goods and services. The utilised amounts of the various inputs determine the quantity of output according to the rela ...

for a wide variety of goods. A supply shock can cause

stagflation Stagflation is the combination of high inflation, stagnant economic growth, and elevated unemployment. The term ''stagflation'', a portmanteau of "stagnation" and "inflation," was popularized, and probably coined, by British politician Iain Mac ...

due to a combination of rising prices and falling output. The

1973 Oil Crisis In October 1973, the Organization of Arab Petroleum Exporting Countries (OAPEC) announced that it was implementing a total oil embargo against countries that had supported Israel at any point during the 1973 Yom Kippur War, which began after Eg ...

is often used as the exemplar case of a supply shock, when

OPEC The Organization of the Petroleum Exporting Countries (OPEC ) is an organization enabling the co-operation of leading oil-producing and oil-dependent countries in order to collectively influence the global oil market and maximize Profit (eco ...

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. A positive supply shock could be an advance in technology (a technology shock) which makes production more efficient, thus increasing output.

Technical analysis

The slope of a demand curve determines how much the price level and output respond to the shock, with more inelastic demand (and hence a steeper demand curve) causing there to be a larger effect on the price level and a smaller effect on quantity.

References

Bibliography

* Czech, Brian, ''Supply Shock: Economic Growth at the Crossroads and the Steady State Solution'', (Gabriola Island, Canada, 2013) {{United States–Commonwealth of Nations recessions Business cycle Supply-side economics 1973 oil crisis

Technical analysis

See also

References

Bibliography