The principal-agent model of executive compensation is of central importanc
e to the modern theory of the firm and corporate governance, yet the existi
ng empirical evidence supporting it is quite weak. The key prediction of th
e model is that the executive's pay-performance sensitivity is decreasing i
n the variance of the firm's performance. We demonstrate strong empirical c
onfirmation of this prediction using a comprehensive sample of executives a
t large corporations. In general, the pay-performance sensitivity for execu
tives at firms with the least volatile stock prices is an order of magnitud
e greater than the pay-performance sensitivity for executives at firms with
the most volatile stock prices. This result holds for both chief executive
officers and other highly compensated executives es. We further show that
estimates of the pay-performance sensitivity that do not explicitly account
for the effect of the variance of firm performance are biased toward zero.
We also test fur relative performance evaluation of executives against the
performance of other firms. We find little support for the relative perfor
mance evaluation model. Our findings suggest that executive compensation co
ntracts incorporate the benefits of risk sharing but do not incorporate the
potential informational advantages of relative performance evaluation.