Modelling the Push Factors of Sustainable Project Management Implementation in Emerging Economies: Does Firm Size Matter

Drawing insights from transformational leadership theory, this study examined the influence of leadership commitment, organizational culture, and employee involvement on the success of sustainable project management implementation in the construction industry in Ghana.The proposed model, validated using survey data from 200 senior managers, revealed that organizational culture, leadership commitment, and employee involvement play essential roles in supporting the successful implementation of sustainable project management practices, with firm size serving as a transformative mechanism that enables construction firms in the resource-constrained Ghanaian environment to reap superior benefits.These findings contribute to the project management literature, offer essential managerial guidance for construction industry leaders, and extend the frontiers of sustainable project management by elucidating the amplifying mechanisms through which leadership, culture, and employee involvement can drive the success of sustainable project management implementation.