This paper characterizes incentive contracts for the situation where a
principal is privately informed about the technology governing an age
ncy relationship. In contrast to a standard principal-agent relationsh
ip, it is shown that a principal who values effort highly will choose
to induce effort by paying a high base wage and low bonus payments. Mo
reover, the equilibrium contract has the principal transferring rents
to the agent even though contracting possibilities are unrestricted an
d both principal and agent are risk neutral. Consequently, the informe
d-principal framework is shown to provide a rational for the payment o
f efficiency wages.