CSCW has long been concerned with the distribution of activities in time and in space, but the problems of distributed work have often taken analytic and technical precedence. In this paper, we are interested in the issue of temporality in collaborative work. In particular, we want to examine how the temporal organization of action is experienced by those who are involved in it. To investigate this phenomenon, we conducted a field study of medical workers in a surgical intensive care unit. Through this study, we highlight the temporal organization of the work. In particular, we introduce and describe three temporal features – temporal trajectories, temporal rhythms, and temporal horizons – that emerge from and influence the work of healthcare providers as they attempt to seek, provide, and manage information during the course of their daily work.