Formulating Systemic Construction Productivity Enhancement Strategies

摘要

Studies that have measured construction productivity, analyzed its influencing parameters, and explored enhancement strategies abound in the literature. However, few have quantified the relationship between the total factor productivity (TFP) of the construction industry and its parameters, nor have they provided quantitative evidence supporting the formulation and implementation of construction productivity enhancement strategies (CPES). This paper demonstrates a novel mixed-methods design that develops a systemic framework of construction TFP enhancement. The study measured the TFP of the construction industry, examined the systemic nature of its influencing parameters, explored its relationship with these parameters, and identified the dynamic nature of construction productivity enhancement measures and strategies. The developed research methods were validated and contextualized within the context of the Hong Kong construction industry which faces significant issues such as labor shortage, aging workforce, and high construction costs that beg for urgent productivity improvement. Applying the proposed methods to the Hong Kong construction industry, 15 measures and 4 strategies were identified and formulated, these strategies being to formulate a strategic plan, encourage technological innovation, build a sustainable construction workforce, and improve effective construction management. The measures and strategies form a diamond-shaped framework for systemic construction industry TFP enhancement. The measures under each strategy were illustrated by a causal loop diagram in the framework, indicating that the strategies should be adopted systematically for maximized synergies. The study contributes to the literature with its novel mixed-methods design that provides measurable evidence for developing a systemic construction TFP enhancement framework that supports industry stakeholders in effectively formulating and implementing the CPES.