Conceptual Model of Safety Leadership Influence in Large Temporary Project Organizations

Safety leadership is a critical determinant of safety performance in large temporary project organizations, such as construction megaprojects, oil and gas facilities, and process plant commissioning projects. These environments are characterized by high complexity, multi-tiered subcontracting, transient workforces, and dynamic operational conditions, which collectively increase the likelihood of safety incidents. This develops a conceptual model to elucidate the mechanisms through which safety leadership influences safety outcomes in such organizations. The model integrates leadership behaviors, organizational culture, relational governance, and operational control mechanisms to explain how leaders shape safety perceptions, motivate compliance, and foster proactive hazard management. Key components include visible leadership engagement, alignment of safety values across clients, contractors, and subcontractors, and the establishment of trust and psychological safety that encourages reporting and learning behaviors. The model also incorporates communication and coordination processes that link safety information across project interfaces, ensuring that hazard knowledge is disseminated effectively and translated into preventive action. Moderating and contextual factors, including project complexity, subcontractor capability, resource constraints, safety culture alignment, and regulatory enforcement strength, are included to account for variations in leadership effectiveness across different project environments. By conceptualizing safety leadership as both a behavioral and relational influence, the model highlights the interplay between individual leader actions, team dynamics, and organizational structures in shaping safety outcomes. This framework provides both theoretical and practical insights: it informs empirical research on leadership–safety performance relationships and offers guidance for clients, main contractors, and subcontractors in designing leadership strategies, governance arrangements, and training interventions to enhance safety performance. Overall, the conceptual model advances understanding of safety leadership in temporary project organizations, emphasizing the importance of proactive, visible, and relational leadership in high-risk, multi-actor contexts.