Team production,endogenous learning about abilities and career concerns

This paper studies career concerns in teams where the support a worker receives depends on fellow team members? efforts and abilities. In this setting, by exerting effort and providing support, a worker can influence her own and her teammates? project outputs in order to bias the learning process in her favor. To manipulate the market?s assessment, we argue that in equilibrium, a worker has incentives to help or even sabotage her colleagues in order to signal that she is of higher ability. In a multiperiod stationary framework, we show that the stationary level of work effort is above and help effort is below their efficient levels.