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Explicit Evidence of an Implicit Contract

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  • Young, Andrew
  • Levy, Daniel

Abstract

We offer the first direct evidence of an implicit contract in a goods market. The evidence comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a written evidence of its implicit contract with its consumers—a very explicit form of an implicit contract. The contract promised a 5¢ price and adherence to the “Secret Formula.” Because implicit contracts are unobservable, we adopt a narrative approach. Analyzing a large number of historical documents, we offer evidence of the Company both acknowledging and acting on this implicit contract. We explore quality as a margin of adjustment available to Coca-Cola. The implicit contract included a promise not only of a constant price but also a constant quality (the “real thing”). During a period of over 70 years, we find evidence of only a single case of true quality change. We demonstrate that the perceived costs of breaking the implicit contract were large.

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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 49174.

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Date of creation: 19 Aug 2013
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Handle: RePEc:pra:mprapa:49174

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Keywords: Implicit Contract; Explicit Contract; Invisible Handshake; Customer Market; Long-Term Relationship; Price Rigidity; Sticky Prices; Price Adjustment; Quality Rigidity; Quality Adjustment; Nickel Coke; Coca-Cola; Secret Formula; Real Thin;

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Cited by:
  1. Alexander L. Wolman, 2000. "The frequency and costs of individual price adjustments," Economic Quarterly, Federal Reserve Bank of Richmond, issue Fall, pages 1-22.
  2. Levy, Daniel, 2007. "Price Rigidity and Flexibility: Recent Theoretical Developments," MPRA Paper 2761, University Library of Munich, Germany.
  3. Daniel Levy, 2006. "Price Rigidity and Flexibility: New Empirical Evidence," Emory Economics 0611, Department of Economics, Emory University (Atlanta).
  4. Söderberg, Johan, 2011. "Customer markets and the welfare effects of monetary policy," Journal of Monetary Economics, Elsevier, vol. 58(3), pages 206-219.
  5. Georg Muller & Mark Bergen & Shantanu Dutta & Daniel Levy, 2006. "Holiday Non-Price Rigidity and Cost of Adjustment," Working Papers 2006-4, Department of Economics, Bar-Ilan University.
  6. Andrew T. Young & Alexander K. Blue, 2007. "Retail prices during a change in monetary regimes: evidence from Sears, Roebuck catalogs, 1938-1951," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 28(7), pages 763-775.
  7. Georg Müller & Mark Bergen & Shantanu Dutta & Daniel Levy, 2007. "Non-price rigidity and cost of adjustment," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 28(7), pages 817-832.

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