Down-Menu*/ .nav li ul {position: absolute; padding: 20px 0; width: 300px;}

Project management according to the Pareto Principle: Increasing efficiency, maximizing success

How the 80/20 rule optimizes resources, minimizes risks, and puts projects into the fast lane

Project management according to the Pareto Principle: Increasing efficiency, maximizing success

The world around us often follows a remarkable pattern: a small proportion of causes leads to the majority of results. It is commonly assumed, for instance, that 20 percent of the work accounts for 80 percent of the results. In the realm of project management, where efficiency is paramount, this knowledge, also known as the Pareto Principle, can help us work efficiently rather than perfectionistically. In this post, we take a close look at what the Pareto Principle is and how it is applied in project management.

What is the Pareto Principle?

The Pareto Principle, also known as the 80/20 Principle, was named after the Italian economist Vilfredo Pareto, who lived in the late 19th and early 20th centuries. Pareto observed that in many situations, a majority of results were produced by a small portion of the causes. For example, he discovered that about 80 percent of the land in Italy was controlled by approximately 20 percent of the population. Pareto further developed these observations and formulated the principle that later bore his name.
Although Vilfredo Pareto was one of the first to grasp the principle and describe it in economic contexts, there is no specific scientific study that validates the Pareto Principle in its general form. Instead, it is more of an empirical observation that has been repeated in numerous different areas and situations. Thus, researchers and scientists have studied and applied the Pareto principle in various ways over time. In economics and business, it has been used to describe distributions of resources, income, sales figures, and much more. Similar patterns have been discovered in other fields such as social sciences, engineering, biology, and even everyday life. Thus, while there is no specific study that validates the Pareto Principle as a whole, the repeated observation of unequal distributions and the disproportionality of cause and effect in various fields confirm its validity. The principle is often used as a rule of thumb or heuristic tool to make better decisions and use resources more efficiently in different situations.

How the Pareto Principle helps in project management

The Pareto Principle can help in various ways in project management because smartly applying this principle allows you to identify the most critical levers of a project, use resources more effectively, and consequently significantly enhance project success.

  • Task prioritization: The principle enables the identification of tasks that have the most significant impact on project success. By focusing on the 20 percent of tasks that deliver 80 percent of the value, you can ensure that your limited resources are optimally utilized.
  • Resource management: Achieving a 100% solution often requires substantial effort. By focusing on the 80% of the most critical requirements, the effort can be significantly reduced. By applying the Pareto Principle, you can ensure that your resources, such as time, budget, or personnel, are allocated where they create the most significant value and avoiding investing valuable resources in less important tasks.
  • Risk assessment and management: With the 80/20 rule, you can easily identify the most critical tasks and issues that could have the most significant impact on project success. These tasks also carry the highest risk of project failure if not implemented correctly. By focusing on these key areas, you can minimize risks and reduce the likelihood of delays or errors.
  • Time management: The Pareto Principle also helps in effectively utilizing available time by encouraging you and your project team to focus on tasks that bring the most value. This can reduce bottlenecks and increase the likelihood of completing a project on time.
  • Customer and stakeholder satisfaction: By focussing on the essential aspects of the project, you can ensure that the most crucial needs and expectations of customers as well as stakeholders are optimally met. This helps increase their satisfaction and strengthens trust in the project.
  • Focus on innovation: By focusing on the 20 percent of ideas or features that provide the most value, you can create room for creative solutions and foster innovative approaches.
  • To prevent overwhelm: The Pareto Principle further aids by promoting a focus on the essentials. This contributes to reducing stress among team members and enhancing the quality of work.
  • Continuous improvement: By regularly applying the Pareto Principle, you can continuously review, analyse, and optimize projects. This enables continuous improvement of efficiency and project success.
  • Project portfolio management: The Pareto Principle can also be used in project portfolio management, helping you identify projects that deliver the majority of the expected benefits or have the most significant impact on the company’s strategy.

Application of the Pareto Principle in project management: Maximizing results with minimal effort

The application of the Pareto Principle in project management is based on the understanding that not all tasks and aspects of a project are of equal value. Instead, a few elements significantly contribute to overall success, while others have comparatively minimal influence. By breaking down the project into its components and conducting a critical analysis, project managers can identify the 20 percent of tasks, problems, or features that generate the majority of results. This allows focusing resources, energy, and attention on these key aspects to achieve maximum impact.

Example: Consider a software development project, for instance. By applying the Pareto Principle, the team could identify the critical 20 percent of features that contribute to 80 percent of user satisfaction. These features could then be prioritized and developed first to provide value early and minimize potential delays.

The Pareto Principle also serves as a guide for efficient resource allocation. Instead of distributing time and effort evenly across all aspects of the project, project managers can invest specifically in areas promising the highest return on investment. This not only results in more efficient resource utilization but also contributes to making the project process agile, allowing flexible responses to changing conditions.
However, applying the Pareto Principle in project management requires clear analysis, prioritization, and continuous review of chosen focal points. Project managers can rely on historical data, past experiences, and stakeholder feedback to identify tasks that make the most significant contribution to overall success.

Identification of key tasks

In project management, it often involves managing a multitude of tasks to achieve a common goal. To determine which tasks have a low impact on project success and which ones are key, a thorough analysis of the project scope, goals, and expected outcomes is necessary. A project manager should ask which tasks or activities have the most significant influence on the end result. To answer this question, several approaches can be pursued:

  • Evaluation of past projects: Review completed projects. Which tasks contributed to the successful implementation of a project? Which tasks caused failure? Utilize historical data, performance metrics, and customer feedback for valuable insights into the project’s progress.
  • Defining project objectives: If there is a clear project objective, tasks contributing directly to achieving this objective can be identified. This often requires close collaboration with stakeholders to ensure all essential requirements are captured.
  • Identifying risks: It is crucial to consider tasks that pose high risks or are time-critical. These tasks could make the difference between a smooth project flow and potential issues.

Once the key tasks are identified, project managers can focus on the 20 percent of tasks that bring the majority of the benefits. These tasks are then prioritized, receiving the most resources and attention.

The identification of key tasks requires precise analysis, open communication with the team and stakeholders, as well as the ability to keep the big picture in mind.

Efficient resource allocation: Maximum impact with limited resources

After identifying key tasks, the necessary resources can be allocated to these tasks. By focusing primarily on these tasks, you can optimize your scarce resources and benefit in various areas:

  • Time management: By focusing on key tasks, project managers can reduce time constraints and optimize project processes.
  • Budget optimization: Allocating financial resources to essential tasks helps utilize the budget more efficiently and avoids unnecessary expenses.
  • Workforce: By distributing team members to tasks that make the most significant contribution, productivity and team motivation increase.
  • Risk Management: Targeted allocation of resources to critical tasks minimizes potential risks and prevents bottlenecks.

The application of the Pareto Principle in resource allocation requires clear prioritization, close collaboration with the team, as well as continuous monitoring of project progress. Through this targeted distribution of resources, project managers can ensure that the most significant benefit is derived from the limited resources. This not only saves time and costs but also maximizes the overall project performance.

Risk management and prioritization: Minimizing uncertainties in project management

The Pareto Principle proves to be not only an excellent tool for increasing efficiency but also an effective means of coping with risks in project management. By focusing on the 20 percent of tasks or factors that have the most significant impact, potential difficulties can often be prevented.
In this context, identifying key tasks enables clear prioritization of tasks. This prioritization not only applies to the most critical tasks but also to potential risks that could affect these key tasks. By proactively addressing these risks, project managers can prevent delays and unexpected problems. The close connection between risk management and prioritization becomes especially apparent when it comes to focusing on the critical path of a project. It represents the sequence of key tasks that require the longest total work effort. By identifying and addressing the critical path as a priority, project managers minimize the likelihood of delays that could jeopardize the entire project. Simultaneously, they can take proactive measures to reduce potential risks or prevent their occurrence.
In the example mentioned earlier, this could mean identifying not only the key tasks but also the key components that, if malfunctioning, could endanger the functionality of the entire software application. This allows risks related to these functions to be focused on and to be proactively addressed.

Continuous application of the principle: Dynamic control for long-lasting project success

The Pareto Principle in project management is not a one-time tool but rather a methodology that should be continuously applied to ensure sustainable efficiency and success. By applying the fundamental principles of the Pareto Principle throughout the entire project lifecycle, project managers can ensure that their projects always stay on the right track.
The continuous application begins in the project planning phase. Here, key tasks are identified and prioritized. This forms the basis for the strategic direction of the project and helps focus on the essentials. During project implementation, project managers should regularly review the progress and ensure resources are allocated where they provide the most significant value. This regular review allows flexible adaptation to changes in the project environment as well as adjustments if necessary.
Moreover, the Pareto Principle can also be applied to the constant improvement and development of projects. For example, after completing a project phase, project teams can analyse which tasks were particularly effective and identify areas for further optimization. This enables continuous project optimization and increases efficiency in future phases or projects.
The continuous application of the Pareto Principle requires a proactive approach and openness to change. It encourages project managers and teams to act agilely and focus on tasks that provide the most significant benefit. Therefore, a successful example of the continuous application of the principle can often be found in software development, where agile methods like Scrum are used. Critical functions are developed, tested, and integrated into the application in regular sprints, while the team continuously evaluates the results and plans the next steps.

Advantages of the Pareto Principle

  • Increased efficiency: The Pareto Principle enables more efficient use of resources such as time, budget, and workforce by focusing on key aspects that provide the most significant benefit.
  • Prioritization: It helps identify and prioritize critical tasks and project components to ensure the most important aspects are addressed first.
  • Risk management: By focusing on the critical 20 percent of causes or tasks, risks can be identified and addressed early, therefore reducing the likelihood of the risk occurring.
  • Strategic alignment: The Pareto Principle also helps ensure that projects and tasks align with long-term business goals.
  • Continuous improvement: Applying the principle leads to continuous review and optimization of projects, and is therefore contributing to long-lasting success.


  • Risk of overgeneralization: Assuming that the Pareto Principle is universally applicable in every context can lead to misjudgements. In reality, the principle may not be meaningful in all projects or situations.
  • Accuracy of data: Identifying the crucial 20 percent can occasionally be subjective and requires precise data as well as analyses. Inaccurate or faulty data can lead to incorrect conclusions.
  • Resistance to change: Introducing the Pareto Principle often requires changes in mindset and project management processes. Team members or stakeholders might initially resist these changes.
  • Potential neglect of marginal aspects: Focusing on key aspects carries the risk of neglecting less important but still necessary tasks or aspects.
  • Complexity of application: In complex projects, applying the Pareto Principle can be challenging, as identifying the 20 percent of critical tasks can be difficult.


The Pareto Principle provides a proven strategy to increase efficiency and maximize project success in project management. By identifying key tasks, efficient resource allocation, targeted risk management, and the continuous application of this principle, project managers can ensure that their limited resources are used optimally to achieve the greatest possible impact.

To implement the Pareto Principle in project management, the project management software myPARM can serve as a valuable tool. With myPARM, project managers can identify the critical 20 percent of tasks, set priorities, allocate resources strategically, and continuously monitor project progress. Furthermore, myPARM’s analytical functions allow early detection of bottlenecks and risks, enabling adjustments to secure project success.

Learn more about the project and portfolio management software myPARM:

Would you like to get to know myPARM in a demo presentation? Then make an appointment with us right away!

Your registration could not be saved. Please try again.
Your subscription was successful. Please check your mailbox and confirm your registration.
Subscribe to our monthly newsletter and stay informed about Parm AG products, news, trends in project management as well as offers and events.