Resource with assignment 0%–what is it?


You can find a lot of examples when you can see that it is possible to assign Resource to Tasks with 0% Units. In this post I will show you how can you do it, and what would happen if you do it. Of course, I will use MS PROJECT 2016!

First I will create very simple Project with 2 Tasks:


and two Resources – John and Mary:


As you can see, for this example, John has 0% Max Units by default, and Mary has 100%.

Now I will assign John To Task 1:


and I will get (I will show Task Usage View):


As you can see, John is over allocated, because by default (since I did not enter Units in the Units field shown in a picture above) Units are 100%. So, in Resource sheet his default Max. Units field is 0%, but he is allocated (or assigned) to Task 1 with 100%, and now he is Over allocated, and he is suppose to work 8 hours per day, e.g. 40 hours for the Whole Task.

Now I will assign Mary to the Task 2 with 0%:


and I will get (I will show Task Usage View):


As you can see, Mary will work zero hours (because she is assigned with zero %), and Task duration is now 0 days, so it is Milestone now.

OK! Now you know combinations with 0% units assigned. But, the most important question is WHY? Why will someone assign Resource to the Task with 0% Units, or why will someone have Resource in Resource sheet with default Max units = 0%?

If you have Resource with 0% Max units in Resource sheet it means that you have Resource which is unavailable all the time for all Project activities, and every assignment with Units > 0% will result in over allocation. This can be use in rare situation when you know that you, actually do not have Resource available, but in urgent case, where you have no other option you will use it so these Resource will work over time, e.g. it will be overrated.

On the other hand, if you assign Resource to the Task, and you put 0% in Units, it means that this Resource will do no work on the Task, e.g. it will not spend a single second on it. So, the right question will be: “Why should someone assign this Resource to the Tasks?”. The answer is (from my point of view): There is no reason for that, except if you have some administrative procedure, let’s say that you want to assign Mary, as a Project Manager responsible for this Task, but she will actually do nothing on it.

Hope this helps.



About Nenad Trajkovski

Location: Zagreb, Croatia Occupation: Project Manager Interests: Project Management and MS PROJECT He was born in Zagreb, Croatia at 1963. After completing his college he started working on projects in different business areas (banking, manufacturing, automotive industry, distribution, oil companies, etc.) developing and implementing ERP systems into different companies. He has got a lot of experience working with people in different business processes and also possesses great knowledge in information technologies and financial services. Today he works as a business consultant, adn Project Manager in PERPETUUM MOBILE d.o.o. Zagreb. He is a regular lecturer for Project Management in MS Innovation Center in Varaždin, Logosoft Sarajevo in Bosnia and Herzegovina and SEAVUS GROUP in Skopje Macedonia. He was named the best lecturer of WINDAYS 2008 while his lecture was also voted as the best. In addition, he was in TOP 10 lecturers at the MS SINERGY 2009 and MS VISIA 2009, 2010. Shares first place as the best lecturer of KulenDays 2009 and 2010 and PMI Conference 2009 in Zagreb. He is also a regular lecturer in the MS Community. He is a Certified Accountant and a PMP (Project Manager Professional) and a PMI-RMP (Risk Manager Professional), MCP, MCT, and Microsoft Certified Technical Specialist - Microsoft Project 2010. From 01.01.2012 awarded with MVP (Microsoft Most Valuable Proffesional - Microsoft Project)!
This entry was posted in MICROSOFT PROJECT, MS PROJECT 2016, PMI, PRoject Management and tagged , , . Bookmark the permalink.

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