Data from a field experiment, conducted within a tree-planting firm, are used to estimate the gain in productivity that is realized when workers are paid piece rates rather than fixed wages. The experiment provides daily observations on individual worker productivity under both piece rates and...

The role of field experiments in evaluating the effect of compensation policies on worker productivity is considered. Particular attention is paid to the ability of a field experiment to identify the effect of a permanent change in firm policy. While field experiments solve endogeneity problems...

We consider the response to incentives as an explanation for productivity differences within a firm that paid its workers piece rates. We provide a framework within which observed productivity differences can be decomposed into two parts: one due to differences in ability and the other due to...