Fair or Foul?: The Effects of External, Internal, and Employee Equity on Changes in Performance of Major League Baseball Players
研究提出六项假设，分析员工、内部和外部不公平对绩效变化的影响，基于362名棒球球员数据发现，过度薪酬（员工和外部不公平）显著预测绩效提升，薪酬不足则预测绩效下降，且员工公平比内部公平更能预测绩效变化。
We propose six hypotheses that relate employee, internal, and external inequities to changes in performance. We test these hypotheses with a sample of 362 Major League Baseball players. The findings showed that overpayment (as measured by actual employee and external inequities) is a significant predictor of positive performance changes, underpayment is a significant predictor of negative performance changes, and employee equity is a greater predictor of change in performance than internal equity.