Purpose: – The construction industry mostly adopts teams consisting of a collection of diverse professionals in each of its product delivery projects, where normally the construction project manager (CPM) becomes the leader of such a project team. The purpose of this paper is to identify the leadership roles of the CPM across the team development process. Design/methodology/approach: – This was approached through a multiple case study research method carried out using three construction projects in Sri Lanka; two projects on traditional procurement method and another on design and build procurement method. Semi-structured interviews were conducted with the respective project managers and with other three distinct team members of each project. Findings: – Based on the findings, leadership roles of the CPM across the team development process were revealed with the situational factors that affect these leadership roles in each stage of the team development process. Originality/value: – Even though project leadership is discussed by pervious researchers, concrete evidence has not been provided to show how it should change at different stages of a project. This research addresses this gap and would guide CPMs to change their leadership role appropriately to suit the needs of each team development stage.

Purpose: Irrigation System Management (ISM) poses many issues in terms of social and technical aspects. These can be further elaborated as the issues toward the efficiency of infrastructure, equity of water sharing, environmental integrity and economic acceptability. Water losses and the structural changes of the system caused many issues putting the irrigation system into distress. Hence, this urges the need for sustainable ISM to improve social and technical attributes in ISM. This paper aims to apply the Socio-Technical Systems (STSs) theory for sustainable ISM.Design/methodology/approach: The qualitative expert opinion survey method was selected as the research strategy to approach the research aim. Sixteen industry professionals in the ISM sector were selected through the purposive sampling method to conduct semi-structured interviews to collect data in the Sri Lankan context. Code-based content analysis through a directed approach was used to analyse the data.Findings: Four main categories of strategies were emerged from the research findings as “engineering strategies”, “operational strategies”, “management strategies” and “regulatory strategies” through STS approach for sustainable ISM. The STS framework was developed by combining engineering and operational strategies into the technical subsystem and the management and regulatory strategies into the social subsystem to approach the aim of achieving contemporary system management in irrigation in a sustainable manner.Originality/value: The research revealed the links between the strategies emerged from various disciplines to minimise the issues in ISM from the perspectives of technical and social subsystems. The study contributes to knowledge by providing a framework for sustainable ISM by applying the socio-technical systems theory by integrating the concepts of sustainability.

Purpose: Offsite construction (OC) is an efficient method to reduce waste in the construction industry from a circular economy perspective. Yet, its uptake is subdued by the ambiguities around its supply chain. Hence, the purpose of this study is twofold: to identify the OC project delivery models, the limitations in their procurement approach to facilitate the resilience of the supply chain and interventions to promote supply chain resilience (SCR) and to identify the gaps in the existing procurement process and propose further research areas that implement strategies to improve SCR. Design/methodology/approach: The study was conducted as a systematic literature review. In total, 41 peer-reviewed research papers published between 2013 and 2023 were shortlisted through the preferred reporting items for systematic reviews and meta-analysis guidelines. A descriptive analysis was conducted, followed by a thematic analysis. Findings: The descriptive analysis reveals that the emphasis on digitising OC has shifted to transforming the business model, procurement and supply chain with a human-centric view. In thematic analysis, the predictability of the SC partners and the probabilities of evaluating the prospects are revealed as arbitrary characteristics in the current procurement strategies. Rewarding collaborative relationships among SC partners and incorporating provisions to postpone the module delivery are some interventions to promote flexibility. Drafting comprehensive and effective contracts that address transparency issues and facilitating the need for continuous development of capabilities through procurement are among the further research avenues proposed. Originality/value: This study is a precursor demonstrating the potential of the procurement process to implement the decrees of SCR for better goal congruence of the OC supply chain.

Purpose: The lack of a comprehensive understanding of the relationships between transaction cost determinants (TCDs) and supply chain resilience (SCR) has concerned the effective and efficient management of supply chain uncertainties in the offsite construction industry. Therefore, this study aims to examine the influence of TCDs, namely asset specificity, transaction frequency, transaction uncertainty, bounded rationality and opportunism, on SCR, grounded in transaction cost theory (TCT). Furthermore, it investigates the mediating role of governance in the relationship between TCDs and SCR. Design/methodology/approach: Data were collected from 97 Australian offsite construction supply chain partners via a questionnaire survey through a purposive sampling process. Data analysis was conducted quantitatively using partial least square structural equation modelling (PLS-SEM). Findings: The results revealed that asset specificity, transaction frequency and transaction uncertainty were significantly associated with SCR constructs. Governance confirmed a significant mediating effect on these relationships. Interestingly, opportunism did not have a significant negative relationship with the SCR constructs, suggesting the need to explore its behaviour in enhancing SCR. Bounded rationality demonstrated a significant direct association with SCR constructs regardless of the mediating effect of governance. Originality/value: This study provides novel insights by empirically testing the mediating effect of governance on the relationship between TCDs and SCR. It highlights the importance of promoting SCR with a minimum impact on the cost-effectiveness of offsite construction projects.

Purpose: Many work-related factors particularly affect the mental well-being of young construction workers and subsequently affect their productivity at work. Young construction workers in South Australia are more vulnerable than other workers because they consider the distress arising from work-related factors to be part of adapting to a new work life. Therefore, this study seeks to draw out the work-related factors that affect the mental well-being of young construction workers. Design/methodology/approach: The study employed a sequential mixed method approach including a preliminary qualitative case study and a quantitative survey. Around 20 interviews across two organisations were conducted in the initial case study and content analysis was used to contextualise the factors and identify new factors. Then, the outcome of the case study was fed into a questionnaire survey for further analysis. The survey received 43 valid responses. Principal component analysis (PCA) was performed on the survey outcome to assess and categorise the work-related factors. Findings: The findings indicate ten prominent work-related factors contributing to poor mental well-being of young construction workers related to three main categories of factors, namely “nature of work”, “task-related stress” and “unsupportive behaviour”. The work-related factors that have the greatest impact on mental well-being are the machoism culture of industry, work overload and workplace bullying. Originality/value: The outcome from this study enhances the understanding of key work-related factors affecting the mental well-being of young construction workers. Research findings would also help inform the development of clear, industry-informed initiatives tailored to protect and support young construction workers.