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Unit Total Costs: An Alternative Marginal Cost Proxy for Inflation Dynamics

George Bratsiotis () and Wayne Robinson

Centre for Growth and Business Cycle Research Discussion Paper Series from Economics, The University of Manchester

Abstract: The conventional New Keynesian Phillips Curve (NKPC), driven by unit labor costs has been criticized for failing to match inflation dynamics and for explaining the duration of fixed price contracts. This paper extends recent attempts in the literature to find an alternative marginal cost proxy for the NKPC, by introducing a fuller marginal cost proxy, 'unit total costs' that is derived from both labor and non-labor unit costs, where the latter includes, capital related costs and production taxes. Borrowing costs are also examined separately, as in the cost channel literature. Unit total costs are shown to improve the fit of the short-run variation in inflation and strengthen the empirical support for the role of expectations-based inflation persistence. They also imply a duration of fixed nominal contracts that is closer to those suggested by firm-level surveys. The cost channel becomes relatively less important when unit total costs, rather than unit labor costs, are used as a marginal cost proxy.

Pages: 33 pages
Date: 2014
New Economics Papers: this item is included in nep-mac
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Citations: View citations in EconPapers (4)

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Journal Article: UNIT TOTAL COSTS: AN ALTERNATIVE MARGINAL COST PROXY FOR INFLATION DYNAMICS (2016) Downloads
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