Inventories and the Short-Run Dynamics of Commodity Prices

Robert S. Pindyck

NBER Working Paper No. 3295 (Also Reprint No. r1879)
Issued in March 1990
NBER Program(s):Monetary Economics

The idea that wages rise relative to alternatives as job seniority accumulates is the foundation of the theory of specific human capital, as well as other widely accepted theories of compensation. The fact that persons with longer job tenures typically earn higher wages tends to support these views, yet this evidence ignores the decisions that have brought individuals to the combination of wages, job tenure, and experience that are observed in survey data. Allowing for sources of bias generated by these decisions, this paper uses longitudinal data to estimate a lower bound on the avenge return to job seniority among adult men. I find that 10 years of current job seniority raises the wage of the typical male worker in the U.S. by over 25 percent. This is an estimate of what the typical worker would lose if his job were to end exogenously. Overall, the evidence implies that accumulation of specific capital is an important ingredient of the typical employment relationship, and of life-cycle earnings and productivity as well. Continuation of these relationships has substantial specific value for workers.

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Document Object Identifier (DOI): 10.3386/w3295

Published: The RAND Journal of Economics, vol 25, no 1, pp 141-159, Spring 1994 citation courtesy of

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