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Decomposition and Super-efficiency in the Korean Life Insurance Industry Employing DEA

  • Lee, Hyung-Suk (Division of Business Administration Pusan National University) ;
  • Kim, Ki-Seog (Division of Business Administration Pusan National University)
  • Published : 2008.09.30
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Abstract

The Korean life insurance industry has undergone profound changes, such as the beginning of the variable insurance in July 2001 and the bancassurance enforcement in August 2003. However, little empirical research has analyzed data that includes the bancassurance of life insurance companies operating in Korea. In response to this lack of research, this paper applies DEA (data envelopment analysis) models to measure and decompose their efficiency. We discovered that life insurance companies operating in Korea are a little different in their composition ratio of inputs and outputs, due to the increased variety of distribution channels and new products. We provided efficiency scores, return to scale, and reference frequencies. We also decomposed CCR, BCC, and SBM efficiency into scale efficiency and MIX efficiency. So, we try to investigate whether the sources of inefficiency were caused by the inefficient operation of DMU, disadvantageous conditions, the difference of the composition ratio in inputs and outputs with reference sets, or any combination of the above. Most companies in the sample display had either constant or decreasing returns to scale. The efficiency rankings were less consistent among models and efficient DMUs. In response to this problem, we used the super-efficiency model to rank them and then compared the rankings of the DMUs among the various models. It was also concluded that the availability of panel data, rather than cross-sectional data, would greatly improve the validity of the efficiency estimates.

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References

  1. P. Anderson and N.C. Petersen, "A Procedure for Ranking Efficient Units in Data Envelopment Analysis", Management Science, Vol. 39, No. 10, 1993, pp. 1261-1264.
  2. R.D. Banker, A. Charnes, and W.W. Cooper, "Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis", Management Science, Vol. 30, No. 9, 1984, pp. 1078-1092. https://doi.org/10.1287/mnsc.30.9.1078
  3. A. Charnes, W.W. Cooper and E. Rhodes, "Measuring the Efficiency of Decision Making Units", European Journal of Operational Research, Vol. 2, 1978, pp. 429-444. https://doi.org/10.1016/0377-2217(78)90138-8
  4. W.W. Cooper, L.M. Seiford, and K. Tone, Data Envelopment Analysis : A Comprehensive Text with Models, Applications, References and DEA-Solver Software, Kluwer Academic Publisher, 2000.
  5. W.W. Cooper, L.M. Seiford and K. Tone, Introduction to Data Envelopment Analysis, Springer, 2006
  6. J.D. Cummins and M. Rubio-Misas, "Deregulation, Consolidation, and Efficiency: Evidence From the Spanish Insurance Industry", Journal of Money, Credit, and Banking, Vol. 38, No. 2, pp. 323-355, 2006. https://doi.org/10.1353/mcb.2006.0029
  7. J.D. Cummins, M. Rubio-Misas and H. Zi, "The Effect of Organizational Structure on Efficiency: Evidence from the Spanish Insurance Industry", Working Paper, 2002.
  8. J.D. Cummins, S. Tennyson and M.A. Weiss, "Consolidation and Efficiency in the US Life Insurance Industry", Journal of Banking & Finance, Vol. 23, 1999, pp. 325-357. https://doi.org/10.1016/S0378-4266(98)00089-2
  9. J.D. Cummins, G. Turchetti and M.A. Weiss, "Productivity and Technical Efficiency Italian Insurance Industry", Working paper, The Wharton Financial Institutions Center, 1996.
  10. J.D. Cummins and H. Zi, "Measuring Cost Efficiency in the U.S. Life Insurance Industry: Econometric and Mathematical Programming Approaches", Working Paper, The Wharton Financial Institutions Center, 1996.
  11. J.D. Cummins and H. Zi, "Comparison of Frontier Efficiency Methods: An Application to the U.S. Life Insurance Industry", Journal of Productivity Analysis, Vol. 10, 1998, pp. 131-152. https://doi.org/10.1023/A:1026402922367
  12. S.R. Diacon, K. Starkey and C. O'Brien, "Size and Efficiency in European Long-term Insurance Companies: An International Comparison", Geneva Papers on Risk and Insurance, Vol. 27, No. 3, 2002, pp. 444-466. https://doi.org/10.1111/1468-0440.00184
  13. N. Doherty, "The Measurement of Output and Economies of Scale in Property-liability Insurance", Journal of Risk and Insurance, Vol. 48, No. 3, 1981, pp. 390-402. https://doi.org/10.2307/252719
  14. K.C. Ennsfellner, D. Lewis and R.I. Anderson, "Production Efficiency in the Austrian Insurance Industry: A Bayesian Examination", The Journal of Risk and Insurance, Vol. 71, No. 1, 2004, pp. 135-159. https://doi.org/10.1111/j.0022-4367.2004.00082.x
  15. F. Fecher, D. Kessler, S. Perelman and P. Pestieau, "Productive Performance of the French Insurance Industry", The Journal of Productivity Analysis, Vol. 4, 1993, pp. 77-93. https://doi.org/10.1007/BF01073467
  16. H. Fukuyama, "Investigating Productive Efficiency and Productivity Changes of Japanese Life Insurance Companies", Pacific-Basin Finance Journal, Vol. 5, 1997, pp. 481-509. https://doi.org/10.1016/S0927-538X(97)00016-4
  17. P. Hardwick, M.B. Adams and Z. Hong, "Corporate Governance and Cost Efficiency in the United Kingdom Life Insurance Industry", EBMS Working Paper, 2003
  18. B.J. Lee, S.J. Lee and S.C. Jung, "The Effects of Bancassurance on the Efficiency of Financial Institutions", Korean Management Review, Vol. 33, No. 2, 2004, pp. 449-472.
  19. T. Leverty, Y. Lin and H. Zhou, "Firm Performance in the Chinese Insurance Industry", Working Paper, 2004.
  20. B. Mahlberg and T. Url, "Effects of the Single Market on the Austrian Insurance Industry", Empirical Economics, Vol. 28, 2003, pp. 813-838. https://doi.org/10.1007/s00181-003-0164-6
  21. S.A. Mansor and A. Radam, "Productivity and Efficiency Performance of the Malaysian Life Insurance Industry", Journal Ekonomi Malaysia, Vol. 34, 2000, pp. 93-105.
  22. K. Tone, "A Slacks-based Measure of Efficiency in Data Envelopment Analysis", European Journal of Operation Research, Vol. 130, 2001, pp. 498-509. https://doi.org/10.1016/S0377-2217(99)00407-5
  23. K. Tone, and B.K. Sahoo, "Evaluating Cost Efficiency and Returns to Scale in the Life Insurance Corporation of India Using Data Envelopment Analysis", Socio-Economic Planning Sciences, Vol. 39, 2005, pp. 261-285. https://doi.org/10.1016/j.seps.2004.06.001
  24. A.C. Worthington and E.V. Hurley, "Technical, Allocative and Cost Efficiency in the Australian General Insurance Industry", Working Paper, 2000.
  25. A.M. Yuengert, "The Measurement of Efficiency in Life Insurance: Estimates of a Mixed Normal-Gamma Error Model", Journal of Banking and Finance, Vol. 17, 1993, pp. 483-496. https://doi.org/10.1016/0378-4266(93)90047-H
  26. J. Zhu, Quantitative Models for Performance Evaluation and Benchmarking, Kluwer Academic Publishers, 2003.