This paper compares the principal's payoff in agency model under diffe
rent assumptions about the agent's access to information. The agent ma
y make decisions before (is uninformed) or after (is informed) learnin
g the state of nature. When there are two possible outcomes, the princ
ipal typically prefers informed to uninformed agents, whether the agen
t receives the information before or after contracting. This result is
false when there are more than two outcomes. Conditions under which a
principal prefers one agent to another, when the agents differ only i
n their disutility of effort, are also given.