RT Journal Article SR Electronic T1 Nonbinding Peer Review and Effort in Teams JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 1365 OP 1399 DO 10.3368/jhr.55.4.0717-8907R2 VO 55 IS 4 A1 Kristian Behrens A1 Matthieu Chemin YR 2020 UL http://jhr.uwpress.org/content/55/4/1365.abstract AB Individuals tend to free-ride in teams, thus providing inefficiently low effort. We implement a system of confidential peer review in a randomly selected set of teams, whereby teammates complete an online survey to review the effort of their peers. These reviews are not linked to any rewards or sanctions, thus making them nonbinding. We find that nonbinding peer reviews increase effort and team productivity and do not decrease worker morale. The effects are stronger for low-ability individuals in low-ability teams, where the traditional forces of peer effects may be absent.