An Empirical Comparison of Alternative Methods for the Estimation of the Degree of Operating Leverage.

Much diversity exists in the approaches used to estimate the degree of operating leverage in empirical financial research. This study analyzes and compares two techniques for the estimation of the degree of operating leverage coefficients for a sample of 245 firms in seven different industries over two alternative estimation periods. The results indicate that the T. O'Brien and P. Vanderheiden (1987) estimation technique differs significantly from the G. Mandelker and S. Rhee (1984) estimation technique. Furthermore, the O'Brien and Vanderheiden estimates appear to be more consistent with the classical ex ante model of degree of operating leverage coefficients. These results may facilitate future research on the estimation of the degree of operating leverage and on the relationship between operating leverage and systematic risk. Copyright 1992 by MIT Press.