Until now, the discipline of Human Factors/Ergonomics has paid little attention to the work of managers. Most HFE studies that consider managers see them as the designers of working conditions. Consequently, the approach of HFE specialists often aims at providing managers with a better view on the work of employees, starting from the assumption, or the belief, that managers do not really know what workers actually do and are unaware of the effect of their decisions on the activity of workers.This assumption is fueled by recent observation regarding the increasing distance between managers and their teams: managers are busy with multiple management and documentation tasks, which are influenced by performance scoring systems, and are not evaluated on their abilities to support the work of their teams. Their own working conditions and their own activity are rarely investigated.