TY - CONF TI - Exploring IGLC Literature on Subcontracting C1 - Osaka and Kyoto, Japan C3 - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33) SP - 117 EP - 128 PY - 2025 DO - 10.24928/2025/0143 AU - Saragih, Gregory F. AU - Coelho, Rafael V. AU - Kasih, Richardus N. AU - Kon, Wataru AU - Tommelein, Iris D. AD - MS Student, Civil and Environmental Engineering Department and Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, gregory.saragih@berkeley.edu, orcid.org/0009-0001-4698-3722 AD - PhD Student, Civil and Environmental Engineering Department and Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, rvcoelho@berkeley.edu, orcid.org/0000-0003-3298-3622 AD - MS Student, Civil and Environmental Engineering Department and Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, nugrakasih@berkeley.edu, orcid.org/0009-0001-9821-0481 AD - MS Student, Civil and Environmental Engineering Department and Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, watarukon@berkeley.edu, orcid.org/0009-0009-2254-8089 AD - Distinguished Professor, Civil and Environmental Engineering Department, Director, Project Production Systems Laboratory (P2SL), University of California, Berkeley, USA, tommelein@berkeley.edu, orcid.org/0000-0002-9941-6596 ED - Seppänen, Olli ED - Koskela, Lauri ED - Murata , Koichi AB - Subcontractors are essential to the delivery of many construction projects. However, current approaches to subcontracting are known to be disjointed, with systemic issues such as misaligned objectives among project stakeholders, fragmented workflows, and transactional relationships often limiting subcontractors’ contribution to project success. To support future research in this area, this paper explores how subcontracting has been discussed in selected IGLC literature, grouped into four themes to reflect subcontractors’ involvement across project stages: Selection, Engagement, Execution, and Evaluation. Within each theme, the paper offers reflections and poses open-ended questions that may help inform future studies into the role of subcontractors in Lean Construction. While acknowledging that the observations may not capture the full breadth of existing research, this paper offers preliminary insights into how subcontracting has been addressed in the IGLC literature and suggests opportunities for future study. KW - Subcontracting KW - Lean Construction KW - collaboration KW - relational contracting KW - trade partners. PB - T2 - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33) DA - 2025/06/02 CY - Osaka and Kyoto, Japan L1 - http://iglc.net/Papers/Details/2337/pdf L2 - http://iglc.net/Papers/Details/2337 N1 - Export Date: 02 June 2025 DB - IGLC.net DP - IGLC LA - English ER -