The situation corresponding to a resource of type work who dedicates more than 8 hours a day to accomplish some tasks. Overallocation may have two distinct causes: 1) the resource is assigned to several tasks that are scheduled during the same period (i.e. the resource is supposed to work 4 hours at task1 and 8 hours at task2 in the same day); 2) the PM wants the resource to dedicate more time and assigns more than 100% units for that resource.