Construction labour productivity is influenced by a multitude of factors. Though considerable research exists on productivity factors in other countries, no study has addressed productivity issues in India. A questionnaire survey was conducted, in the state of Kerala in India, to identify the factors impacting construction labour productivity and their underlying relationships. Among the 44 factors considered, material unavailability was identified as the most critical factor impacting construction productivity. Factor analysis employed to understand the underlying relationships among the factors, categorized the factors into ten groups, namely, (1) tool and equipment issues; (2) poor labour motivation; (3) improper supervision; (4) poor material planning; (5) poor site management; (6) improper drawing management; (7) project management incompetency; (8) craftsmen issues; (9) lack of meetings and (10) lack of communication. The research findings will provide better insights to construction practitioners into productivity issues in India and guide their efforts to achieve productivity improvement.

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