that over time, either firms learn about worker productivity but productivity remains fixed or workers' productivities … importance. We derive a dynamic model of learning and productivity that nests both models and allows them to coexist. We estimate … correlates of productivity, as opposed to the empirical evidence on employer learning which uses one fixed measure. Second, we …

(SOPs) and Team Incentive Plans (TIPs). In do doing, we assemble important new panel data by merging data from a survey of … consistently that the introduction of a PSP or a TIP will lead to a significant increase in productivity (about 10 percent) whereas … no such evidence found for ESOPs or SOPs. We also find that the productivity payoff appears to be more long-lasting for …

. These findings suggest that small groups provide productivity gains over large groups. Further, they suggest that the lack …