So what is the problem you may ask? The problem comes not in the measurement itself, but in the work involved to get to the measurement. How do you calculate earned value? Well simple, just multiply the percentage of your project plan tasks completed by the Budget at Completion (BAC), and presto, you have earned value. By looking at the equation, it seems simple enough, right? But what the equation does not show is the amount of work required to get an accurate Percentage Complete value. This means not only developing a detailed project plan, where every task must have an estimate as to the number of hours it will take to complete that task, but the actual hours spent on each task need to be tracked and recorded. I have tried this and it is not an easy job. It is very difficult when managing a large project with many resources to have your entire project team track the amount of time that they spend for each task they work on. I have tried time sheets, update meetings, time-tracking software, but something always seems to get missed. Not to mention the fact that, as we all know, tasks are always being added to the project plan as the project moves forward. It is impossible to identify every task to be completed before the project has even started.
I think earned value is a valuable measurement to show executives and senior management, but it is labor intensive to create and I personally would rather spend more time managing the project than collecting the number of hours my team has worked. We do not always have the luxury of a Project Administrator or Project Coordinator to collect and track hours for us…
1PMI PMBOK, 3rd Edition
Andrew Miller is President of ACM Consulting Inc. (www.acmconsulting.ca), a company that provides supply chain and project management solutions. Andrew is PMP certified and has led a variety of clients through complex systems implementations and organizational changes. He is an Instructor of the Procurement and Contracting course, part of the Masters Certificate in Project Management program through the Schulich School of Business Executive Education Centre (SEEC) in Toronto. Andrew has an International MBA from the Schulich School of Business with majors in Logistics and Marketing. He can be reached at firstname.lastname@example.org.