What are Level of Effort (LOE) Activities in Primavera P6?

Posted on June 20th, 2015 by blogger

Home » Blog Post » What are Level of Effort (LOE) Activities in Primavera P6?

The Oracle Primavera P6 software enables something known as LOE or ‘Level of Effort’ activity.

It defines business efforts, which, in general, do not produce a deliverable, but calculate the costs of a project instead. LOE has its own, exclusive duration qualities. The software calculates each duration on the basis of dates from predecessors and successors.

LOE activities are not specific to the software alone. In fact, they are a common, but integral part of every project management system.

So, what really is the purpose of these activities?

If you have taken up a session of Primavera P6 training in Abu Dhabi, you will know than LOE, in project management, is a support-type activity, which backs other activities of the overall project attempt. It runs on small amounts of iterated work, which directly do not have an impact on the deliverables or results of a project.

In simple words, a Level of Effort activity simply supports the progress of a project. Of course, this does not mean that its function is less crucial. As a matter of fact, supportive tasks are as important to a project as the other tasks.

Such critical activities include:

  • Meetings with customers and clients.
  • Management work.
  • Equipment maintenance.
  • Tasks of the clerical level.


From a profit perspective, LOE doesn’t earn a business much. This is clear from the fact that in Earned Value Management for a project, an LOE activity is tagged ‘non-discrete.’ It is difficult to measure these tasks than measuring any distinct task.

Take up a Primavera P6 training in Dubai, and you’ll know how LOE activities never appear on the Critical Path or add duration to a project.

How to make use of LOE activities in the software?

If you are about to add such an activity in the software, chances are that you desire to keep a track of a certain resource and the time it takes on a specific support task.

Because such activities feed on the data provided from their predecessors and successors, you are likely to assign an SS relationship to the predecessors and an FF relationship to the successors. Once these tasks are sorted, you can then assign the resource you want to track to the activity. This will enable his effort to be spread over the duration of the activity.

After the rescheduling of a project, the start date of an LOE activity is acquired from its predecessor’s Early Start date, and the finish date is obtained from the Early Finish date of its successor. After the data is picked up, the software then uses the LOW’s own calendar to calculate the duration between the two set dates.

There will be a new duration calculated every time the activities get a change of their own duration. All these processes will become very clear once you attend a Primavera P6 course in UAE and get hands-on training in handling the software.

Using the software for administrative and project cost accounting:

The software enables users to generate a line item for administrative and project management costs with the help of LOE activities. It also allows them to evenly distribute the costs amongst the different tasks of the project or in some defined curve.

The curve for project management costs is usually uniform, while it can be a bell shaped one for administrative costs. A Primavera certification course in Dubai will help you develop skills on how to model both the shapes using the software.


A LOE activity is an important support element for building project schedules and representing relevant, non-discrete tasks. If you are into project management, it is only wise to learn about its accurate use. Try not to overuse such activities, so that your project remains on track, ever.

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