9Cappelli, P. , and P. D. Sherer. 1990. Assessing worker attitudes under a two -tier wage plan. Industrial and Labor Rela- ms Review, 43 (2) : 225 - 244.
10Cowherd, D. M. , and Levine, D. I. 1992, Product Quality and Pay Equity between Lower-level Employees and Top Management : An Investigation of Distributive Justice Theory. Administrative Science Quarterly, 37 (2) : 302 - 320