Asian Basic and Applied Research Journal

Background: Project schedule overruns remain among the most persistent and costly failures in modern organisations, with studies consistently reporting that approximately 45–50% of projects fail to meet their originally planned delivery dates. Despite decades of accumulated scheduling methodologies and advanced digital tools, the fundamental challenge of time management in complex project environments remains unresolved. This gap reflects an incomplete understanding of the interplay between technical planning systems and the behavioural, psychological, and organisational forces that drive real-world project outcomes.

Objectives: This paper aims to: (1) critically examine the evolution of project time management theory from deterministic scheduling methods to adaptive, human-centred approaches; (2) synthesize empirical evidence on the behavioral and psychological dimensions of project delay; (3) evaluate the role of emerging technologies, including artificial intelligence and Building Information Modeling, as enablers rather than substitutes for human judgment; and (4) propose an integrative four-pillar framework that addresses the technical and human dimensions of project time management holistically.

Methods: A structured narrative literature review was conducted using the Scopus, Web of Science, and Google Scholar databases. Search terms included combinations of the following: "project time management," "schedule performance," "critical chain project management," "temporal leadership," "agile project management," "planning fallacy," and "AI in project management." Publications from 2016 to 2025 were prioritised, with earlier foundational works included where theoretically necessary. Inclusion criteria required that sources be peer-reviewed, published in English, and directly address at least one of the paper’s four thematic pillars: scheduling methodology, behavioural dimensions of time management, digital technology in project scheduling, or organisational culture and leadership. Sources were excluded if they were grey literature, conference abstracts without full text, or duplicated the argument of a more recent publication already retained. A total of 25 peer-reviewed sources were selected based on relevance, methodological rigour, and recency of publication.

Key Findings: The review identifies three interlocking failure modes in project time management: methodological limitations of deterministic scheduling tools in uncertain environments; behavioural biases, including the planning fallacy, Student Syndrome, and Parkinson's Law; and organisational culture that penalises honest estimation and open communication about delays. Evidence from infrastructure, software development, and healthcare IT projects indicates that integrated approaches combining adaptive scheduling, behavioural management, temporal leadership, and data-driven decision support yield significantly better scheduling outcomes than tool-only or method-only interventions.

Conclusions: Effective project time management requires a paradigm shift from purely technical scheduling optimisation to what this paper terms "humanised time management" — an approach that treats psychological safety, temporal leadership, and cultural reinforcement as coequal pillars alongside analytical rigour. The framework explicitly recognises that schedule efficiency (completing work within planned time boundaries) and schedule effectiveness (ensuring that the work delivered is meaningful, relevant, and fit for purpose) are distinct but interdependent goals; optimising for one at the expense of the other is a false economy that ultimately undermines project value. Practitioners are urged to invest in temporal leadership development, adopt hybrid scheduling frameworks, and build organisational cultures where realistic estimation is rewarded rather than punished. Future research should empirically validate the proposed framework across diverse sectors and geographies.