It can’t be 40 or 10 or 80 or anything else. 50% on the task for 40 hours (D), W will have to be 20 hours. Now think about it – if Joe works full-time for 40 hours on a task, the effort Joe will incur will be 40 hours i.e. Let’s say that Joe is supposed to work full time on a task that starts on Monday, 8 AM and ends Friday at 5 PM.Īllocation units (U) is 100% because Joe works full-time on this task. If you are still unsure about the difference between duration and work, I suggest you read this duration vs effort blog article first. To start with, let’s understand why there is a relationship between the duration (D), the work (W), and its allocation units (U). The relationship between Duration (D), Work (W), and Units (U) For this article, we assume that Joe works from 8 AM to 5 PM (with one hour break) every day Monday through Friday i.e 40 hours per week.Work is the same as Effort and is used interchangeably in project management.In this article, I will try to explain this and much more. All these questions and comments stem from a misunderstanding of the relationship between Duration, Work and Units.
I am sure we get these reactions for our own project management software too. “Why does it change anything? Why can’t it just behave like Excel? Why all this complexity just for generating Gantt charts?”
“I added a resource, why does it not reduce the task duration?” “I changed effort, why did it change the dates?” “I changed duration, why did it change the effort?” I have never seen such strong reactions to a software as I have seen for Microsoft Project.
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