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Buyer-Size Discounts and Inflation Dynamics

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  • Mayumi Ojima
  • Junnosuke Shino
  • Kozo Ueda

Abstract

This paper considers the macroeconomic effects of retailers’ market concentration and buyer-size discounts on inflation dynamics. During Japan’s “lost decades,” large retailers enhanced their market power, leading to increased exploitation of buyer-size discounts in procuring goods. We incorporate this effect into an otherwise standard New- Keynesian model. Calibrating to the Japanese economy during the lost decades, we find that despite a reduction in procurement cost, strengthened buyer-size discounts did not cause deflation; rather, they caused inflation of 0.1% annually. This arose from an increase in the real wage due to the expansion of production.

Suggested Citation

  • Mayumi Ojima & Junnosuke Shino & Kozo Ueda, 2014. "Buyer-Size Discounts and Inflation Dynamics," CAMA Working Papers 2014-04, Centre for Applied Macroeconomic Analysis, Crawford School of Public Policy, The Australian National University.
    • Handle: RePEc:een:camaaa:2014-04
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    References listed on IDEAS

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    2. Erceg, Christopher J. & Henderson, Dale W. & Levin, Andrew T., 2000. "Optimal monetary policy with staggered wage and price contracts," Journal of Monetary Economics, Elsevier, vol. 46(2), pages 281-313, October.
    3. Hans-Theo Normann & Bradley J. Ruffle & Christopher M. Snyder, 2007. "Do buyer-size discounts depend on the curvature of the surplus function? Experimental tests of bargaining models," RAND Journal of Economics, RAND Corporation, vol. 38(3), pages 747-767, September.
    4. Jordi Galí & Mark J. Gertler, 2010. "International Dimensions of Monetary Policy," NBER Books, National Bureau of Economic Research, Inc, number gert07-1, March.
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