Many incentives in organizations arise not through explicit formal incentiv
e contracts but rather implicitly through career concerns. This paper model
s career concerns through agents trying to manipulate the market assessment
of their future productivity. The information flow from current actions to
market assessment is therefore crucial in determining the nature of these
incentives. Improved information may either increase or reduce incentives.
The impact of information provides a major distinction between the explicit
and implicit incentives model. The paper derives general results on compar
isons of information structures which serve as counterparts to the standard
results on information structures in the principal-agent model: sufficient
statistic, impact of a Blackwell garbling, comparison of inclusive informa
tion structures.