The aim of this study is to propose and empirically examine multilevel models of students' time management in online collaborative groupwork. Student- and group-level predictors of groupwork time management were analyzed in a survey of 204 graduate students from 61 groups in the Southeast of U.S. Results from the multilevel analyses revealed that most of the variance in time management occurred at the student level, with peer-oriented reasons being the only significant predictor at the group level. Results further revealed that groupwork time management was positively related to feedback and students' efforts in arranging the study environment.