The Comparability of Job Evaluation Methods in Supplying Approximately Similar Classifications in Rating One Job Series

Abstract

There is a belief that any job evaluation method, when correctly applied to a series of jobs, will result in approximately the same rating classification as that supplied by any other method for the same job series. This study was aimed primarily at a determination of the extent to which a number of job evaluation methods, differing in methodology, and presently in use within South Africa on a national basis, would in fact supply similar classification. Correlation coefficients among the ratings supplied by participating organizations, in terms of points allocation for each job subsequent to evaluation according to job evaluation factors (raw point ratings), were unexpectedly high. These correlations ranged from 0,93 to 0,99, with an average of 0,98, indicating a remarkably high level of agreement. Correlations were properly transformed, and mean correlations of each organization with every other organization subsequently calculated. These mean correlations ranged from 0,96 to 0,98, once again indicating a high degree of commonality.