PERT – Program Evaluation and Review Technique and CPM (Critical Path Method) are project management tools for scheduling and controlling projects by breaking them into smaller tasks and analysing their dependencies. PERT is used for projects which usually are run with uncertain activity durations. PERT charts are used using a probabilistic model with optimistic, most likely, and doubtful time estimates. CPM is used for projects with known, deterministic durations, focusing on time-cost by balancing  trade-offs to find the critical path. 

Kingfisher Airlines didn’t give importance to PERT charts. The airline’s eventual collapse was ascribed to a lack of proper PERT procedure in terms of delegation, scheduling of flights, food arrangements and other services in flights. Aircraft maintenance, pilot and aircraft staff duties, scheduling of their work, misbehaviour of staff, and a lack of attention from the owner, highlighting fundamental failures in project management that no planning technique could overcome without proper execution and governance.

A study of ten failed PPP highway cases in India cited issues such as unreasonable traffic and revenue estimates, inflexible contracts, unbalanced risk allocation, regulatory hold-ups, and limited oversight. These systemic flaws in planning and risk management directly relate to the potential pitfalls of relying too heavily on initial PERT estimates without continuous monitoring and adjustment. PERT requires regular monitoring. The projects include the Delhi-Mumbai Expressway, Nagpur Metro Rail, Navi Mumbai International Airport, GIFT City, and the development of Multi-Modal Logistics Hubs in Greater Noida. Other examples include the Operation, Management and Development (OMD) of Multimodal Terminal (MMT) at Varanasi, the development of the Indian Institute of Management (IIM) – Udaipur infrastructure, the Redevelopment of Gwalior and Amritsar Railway Stations, and the construction of Eco-Tourism Resorts in the Andaman and Nicobar Islands and Lakshadweep.

PERT requires detailed purpose. Projects with uncertain timeframes, such as research and development, by focusing on minimizing project completion time are dangerous. PERT timeline uses a probabilistic approach with three time estimates for each activity: optimistic, most likely, and pessimistic.  It is concerned primarily with time and risk assessment, allowing for contingency planning.  It is best for projects with a high degree of uncertainty and a non-linear or unpredictable flow of activities.

The Critical Path Method (CPM) is crucial in project management because it helps identify the longest sequence of dependent tasks to determine the minimum project completion time. This allows project managers to effectively prioritize tasks, allocate resources, track progress, and proactively mitigate risks to ensure timely project delivery. By highlighting critical tasks that cannot be delayed, CPM provides a clear roadmap and facilitates better communication, helping to avoid bottlenecks and schedule delays.

The Bullet Train Project (Mumbai-Ahmedabad High-Speed Rail project has been analysed using both CPM and PERT in research papers to examine critical activities, interdependencies, and estimated timelines, demonstrating the application of these tools in large-scale, high-value infrastructure planning. For construction of rail tracks, the general application of CPM and PERT in the construction of railway lines has been studied, showcasing how these techniques help optimize schedules, manage costs, and ensure timely completion of complex track-laying activities.

The purpose of CPM is to manage projects with predictable activity durations and focuses on balancing time and cost. It uses a deterministic approach with a single, fixed time estimate for each activity. CPM focuses and identifies the critical path—the longest sequence of tasks to ensure timely project completion and explores time-cost trade-offs. It is best for projects with well-defined tasks and durations, such as construction and manufacturing.

While working on large infrastructure and construction projects publicly detailed PERT charts are less common in general descriptions, the nature of India’s major infrastructure drives, such as the Bharatmala Pariyojana (a massive national highways program), the Mumbai Trans Harbour Link, and various other large-scale building and engineering projects, necessitates the use of robust project management methodologies like PERT/CPM for effective planning and execution. Software tools like Primavera P6 (commonly used for engineering and construction) are leveraged for such high-budget projects, which inherently integrate PERT-like functionalities for risk and uncertainty visualization.

Conclusion

Both tools of project management PERT and CPM are often used together because they are complementary. They both involve creating a project network diagram to visualize tasks and dependencies. They help project managers break down large projects, determine the critical path, make decisions, coordinate teams, and analyse if the project will be completed within budget.

Agency theory was independently developed by Stephen Ross in economics and Barry Mitnick in institutional management during the mid-1970s. The most cited work, however, is by Michael C. Jensen and William H. Meckling (1976), who formalized the theory by defining agency costs and creating a framework for reducing conflicts of interest between principals (like owners) and agents (like managers).

Agency theory explains the relationship between a principal, who delegates authority, and an agent, who acts on the principal’s behalf. In a corporate setting, the principal is typically the employer or shareholder, while the agent is the manager or executive responsible for running the organization. A manager plays a crucial role by acting as a link between the employees and top management. Their primary responsibility is to provide leadership and guidance to a team or department, ensuring organizational goals are met through efficient planning, organizing, staffing, leading, and controlling of work. Key responsibilities of the manager include:

Setting individual employee goals

Setting individual employee goals is a core responsibility of a manager, but it should be a collaborative process. Managers work with employees to align individual goals with the company’s strategy, provide ongoing feedback, and involve them in goal setting to foster engagement and development. This approach ensures that individual targets not only support team and organizational success but also contribute to the employee’s personal and professional growth. By translating company strategy into clear, relevant, and achievable objectives, managers help employees understand their role in the broader mission and drive meaningful performance.

Delegating tasks effectively

Effectively delegating tasks is a core responsibility of a manager, crucial for optimizing time management, fostering employee development, and enhancing overall team efficiency and productivity. Good delegation goes beyond merely assigning work; it involves strategically selecting tasks, aligning them with the strengths and capabilities of the right team members, providing clear instructions and the necessary resources, and fostering an environment of trust. Additionally, it requires holding individuals accountable for their results while maintaining open lines of communication and providing ongoing support to ensure successful outcomes.

Monitoring and evaluating employee performance

Effectively monitoring and evaluating employees is a core responsibility of a manager, essential for setting clear expectations, identifying areas for improvement, and fostering continuous development and engagement within the team. This process involves setting clear goals, defining specific, measurable, achievable, relevant, and time-bound (SMART) objectives that align individual performance with organizational priorities. Continuously observing employees’ work to assess progress, behavior, and adherence to standards in real time. Maintaining accurate records of performance metrics, achievements, challenges, and behaviors to support objective evaluations. Providing continuous feedback and coaching.

Motivating and inspiring the workforce

Effectively motivating and inspiring employees is a key responsibility of a manager, as their ability to foster a positive work environment, provide clear guidance, and recognize achievements directly influences productivity, engagement, and overall organizational success. Managers can accomplish this by understanding individual employee needs, communicating a compelling vision, setting achievable goals, offering meaningful incentives and development opportunities, delivering constructive feedback, and cultivating a culture of trust and collaboration.

Making critical decisions

Making critical decisions is a central role of a manager, as managers are responsible for choosing the best courses of action to resolve issues, achieve organizational goals, and guide teams. This involves a process of identifying problems, gathering information, analysing options, selecting the best solution, implementing it, and reflecting on the outcome to ensure company growth, effective operations, and overall success. Managers make countless daily decisions, from assigning tasks to managing budgets, all of which impact the organization. Decisions on new strategies, partners, and resource allocation directly influence the company’s growth and competitiveness.

Acting as a communication bridge between employees and top management

A manager acts as a crucial communication bridge between top-level management and their team of employees, ensuring that strategies from above are translated into actionable plans for the team, and that employee feedback, concerns, and performance data are communicated back up to senior leadership. This role involves clarifying expectations, fostering transparency, advocating for team needs, and ensuring smooth communication flow to maintain understanding and alignment within the organization. Managers interpret higher-level business goals and strategies from senior management, transforming them into clear, achievable operating plans and tasks for their employees.  They communicate company policies, objectives, and changes to their team, making sure that employees understand the bigger picture and their role within it.

The principal-agent problem

In agency theory, the principal delegates authority to the agent, focusing on the potential conflicts of interest that may arise when the agent pursues their own self-interest instead of the principal’s. This situation is termed the principal-Agent Problem and is especially relevant in corporate governance, where shareholders (principals) rely on company managers (agents) to run the organization. A major issue in this relationship is passing on few wrong points which is called information asymmetry where the agent has more information about daily operations or specialized knowledge than the principal. This imbalance allows the agent to make decisions that the principal may not fully understand or control, sometimes to the detriment of the principal’s goals.

the agent holds more information than the principal, creating an imbalance of power and understanding. The outcome of such conflicts is known as Agency Loss: the reduction in the principal’s welfare due to the agent’s self-serving actions.

Key Concepts of Agency Theory:

Principal: The party that delegates authority and expects certain tasks to be performed on their behalf. Commonly, this is the shareholder or owner of the business.

Agent: The party entrusted to act on behalf of the principal, typically a company manager, whose duty is to make decisions that serve the principal’s best interests.

Principal-Agent Problem: The core conflict where the agent’s personal incentives do not align with the principal’s objectives, leading to potentially harmful decisions.

Information Asymmetry: A situation where the agent holds more information than the principal, creating an imbalance of power and understanding.

Agency Loss: The welfare reduction suffered by the principal when the agent’s decisions diverge from the principal’s best interest.