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Efficiency and profitability: a panel data analysis of UK manufacturing firms, 1993-2007

Dietrich, M. (2010) Efficiency and profitability: a panel data analysis of UK manufacturing firms, 1993-2007. Working Paper. Department of Economics, University of Sheffield ISSN 1749-8368

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Abstract

This paper examines the impact of efficiency on profitability using a panel of 11728 UK manufacturing firms for the period 1993-2007. A key contribution is estimation of the relationship between firm efficiency and profitability in a new way. Part of this novelty involves direct estimation of firm efficiency using a stochastic frontier method rather than inferences being made about the impact of efficiency based on anticipated firm and market behaviour. Two key aspects of the discussion are (1) the shape of the relationship between efficiency and profitability and (2) the way in which this changes in the short and long runs. A simple theoretical model is developed that predicts a 4th order polynomial for efficiency on the right hand side of a profit equation in levels. This model also predicts short-run and long-run impacts that can involve a switching in the sign of the impact of efficiency. Estimation of this model suggests a threshold effect of efficiency on profitability. Below the threshold efficiency has effectively no effect on profitability, but above the threshold the impact is positive in the short-run but negative in the long-run. This switching is consistent with theoretical expectations.

Item Type: Monograph (Working Paper)
Copyright, Publisher and Additional Information: The Sheffield Economics Research Paper (SERP) series offers a forum for the research output of the academic staff and research students of the Department of Economics, University of Sheffield. Papers are reviewed for quality and presentation by a departmental editor. However, the contents and opinions expressed remain the responsibility of the authors. All papers may be downloaded free on the understanding that the contents are preliminary and therefore permission from the author(s) should be sought before they are referenced.
Keywords: firm efficiency, firm profitability, stochastic frontier analysis, UK manufacturing firms
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Economics (Sheffield) > Sheffield Economics Research Papers Series
Depositing User: Repository Officer
Date Deposited: 13 Jan 2010 10:08
Last Modified: 10 Jun 2014 17:42
Published Version: http://www.shef.ac.uk/economics/research/serps/yea...
Status: Published
Publisher: Department of Economics, University of Sheffield
Identification Number: Sheffield Economic Research Paper Series 2010003
URI: http://eprints.whiterose.ac.uk/id/eprint/10270

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