The measurement of the social performance of a firm has been widely discussed and debated (Griffin and Mahon, 1997; Margolis and Walsh, 2001; Orlitzky et al., 2003). This was due to the complexity of measuring the social performance of corporations, and the fact that flaws have been pointed out in each methodology, that masked the true value of the social variables (Griffin and Mahon, 1997; Rowley and Berman, 2000; Margolis and Walsh, 2001).