An Integrated Risk Governance
Framework for Megaproject Success
FEATURED PAPER
By Terrence H. Perez
Kingdom of Saudi Arabia
Abstract
Despite decades of accumulated project management knowledge, megaproject underperformance remains chronic: cost overruns, schedule delays and benefit shortfalls are documented consistently across sectors and geographies, with little sign of improvement. This paper examines the decision-making failures underlying this record and asks why proposed remedies have not resolved it. It employs a structured conceptual synthesis, drawing on megaproject management, behavioural decision theory and project governance literature, to identify the mechanisms behind systematic underperformance and develop an integrated explanatory and prescriptive framework.
Two decision-making pathologies are identified—inadequate systems analysis during the front-end phase, and irrational escalation of commitment during execution—with causes examined across cognitive, political and institutional dimensions. The paper advances two original arguments. First, that the limited effectiveness of existing remedies reflects their fragmented introduction: each has been adopted in isolation, without the complementary institutional conditions needed to function. Second, that risk culture is not merely one component of a risk management framework but the organisational precondition on which all other components depend. From these findings, a practical integrated governance framework is developed, addressing risk governance and leadership, risk management as a delivery tool, reference class forecasting and continuous benchmarking, professional development, incentive alignment, independent audit and controls, and international standards including ISO 31000. The paper moves beyond diagnostic accounts of megaproject failure to offer a synthetic institutional and behavioural explanation for why remedies fail, proposing risk culture as the prior condition for effective governance — with direct practical relevance for programme sponsors, boards and risk professionals.
Keywords: Megaproject Risk Management; Risk Governance; Strategic Misrepresentation; Planning Fallacy; Lock-In; Risk Culture; Front-End Management; Cost Overrun; ISO 31000; Reference Class Forecasting
- Introduction
Irrational decisions, whether rooted in cognitive bias, political pressure or institutional incentives, have had a demonstrably serious impact on the selection and delivery of major programmes over many decades. The evidence is consistent and, by now, substantial: the overwhelming majority of megaprojects across multiple sectors and geographies overrun their budgets, miss their scheduled completion dates and fall short of the benefits that justified their approval. Flyvbjerg and Gardner (2023) report that 92 percent of the more than 16,000 projects in their database, spanning 136 countries, overran on cost, schedule or both. What the evidence also shows is that this pattern has proved remarkably resistant to change, persisting across different governance regimes, project management methodologies and levels of professional experience.
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How to cite this paper: Perez, T. H. (2026). Navigating Complexity: An Integrated Risk Governance Framework for Megaproject Success; Featured Paper, PM World Journal, Vol. XV, Issue XI, November. Available online at https://pmworldjournal.com/wp-content/uploads/2026/11/pmwj170-Nov2026-Perez-Navigating-Complexity-Risk-Governance.pdf
About the Author
Terrence H. Perez
Dhahran, Saudi Arabia
Terrence H. Perez is a project risk management specialist in the Project Management Office Department of Saudi Aramco, where for twelve years he has developed and administered the risk management processes and systems supporting the company’s capital programme, including AI-driven risk analytics. He was previously chief risk officer of a major LNG project in Australia, an LNG commercial manager and process engineer in Trinidad and Tobago, and a risk manager with a Canadian investment bank.
He holds an MSc in Major Programme Management from Saïd Business School, University of Oxford, graduating top of his cohort with distinction, and also holds an MBA in Finance and an LLM in Corporate and Commercial Law from the University of the West Indies. He is a member of the Saudi Council of Engineers, the Institute of Risk Management and the Project Management Institute.
