They are a cost to other developers as well. If one person is not able to (or choose not to) handle the tasks he is assigned to then he is a burden on others. N

They are a cost to other developers as well. If one person is not able to (or choose not to) handle the tasks he is assigned to then he is a burden on others. Not to mention others' tasks can have dependency to that person's. In my experience (I think I had two people that intentionally slacks around and wants to get fired) the companies often put such persons on low prio tasks that barely matter. And be a bit more pessimistic with their estimates