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American Economic Review: Vol. 97 No. 5 (December 2007)

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Heterogeneity and Aggregation: Implications for Labor-Market Fluctuations

Article Citation

Chang, Yongsung, and Sun-Bin Kim. 2007. "Heterogeneity and Aggregation: Implications for Labor-Market Fluctuations." American Economic Review, 97(5): 1939-1956.

DOI: 10.1257/aer.97.5.1939

Abstract

We demonstrate that aggregate employment and consumption can increase without a corresponding movement in productivity in a model with heterogeneous agents where the only aggregate disturbance is a productivity shock. The interaction between incomplete capital markets and indivisible labor results in a low employment-productivity correlation and creates a time-varying wedge between the marginal rate of substitution (for commodity consumption and hours) and productivity. Our results caution against viewing the measured wedge as an inefficiency due to a failure of labor-market clearing or as a fundamental driving force behind business cycles. (JEL D31, E32, J22, J24, J31)

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Authors

Chang, Yongsung
Kim, Sun-Bin


American Economic Review


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