NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Aggregate Matching Function

Olivier Jean Blanchard, Peter A. Diamond

NBER Working Paper No. 3175 (Also Reprint No. r1561)*
Issued in April 1991
NBER Program(s):   EFG    ME

We present a picture of the labor market, one with large flows of jobs and workers,

and matching. We develop a consistent approach to the interaction among those flows

and the stocks of unemployed workers and vacant jobs, and to the determination of

wages. We estimate the matching function, using both aggregate data and data from

manufacturing and find evidence of a stable matching process in the data. We examine

the joint movements in unemployment, vacancies and wages -the Beveridge and Phillips

curve relations- in the light of our model. We conclude that aggregate activity shocks

rather than reallocation shocks dominate the movement of unemployment.

*Published: Growth/Productivity/Unemployment, edited by Peter Diamond, pp. 159-201. Cambridge, MA: MIT Press, 1990.

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