TY - CONF TI - Project Wip Management as a Risk Control Driver for Timely Completion C1 - Osaka and Kyoto, Japan C3 - Proceedings of the 33rd Annual Conference of the International Group for Lean Construction (IGLC 33) SP - 494 EP - 504 PY - 2025 DO - 10.24928/2025/0296 AU - Samaniego, Omar A. AD - Engr., Master, NEC-ECC PMA, VDC, PMP®, PMI-RMP®, PMO Solutions Director and Risk Management main consultant, author, and researcher at Pontificia Universidad Católica del Perú - Instituto para la Calidad, comercial@pmo-solutions.com, osamaniego@pucp.pe, https://orcid.org/0000-0003-4352-2610 ED - Seppänen, Olli ED - Koskela, Lauri ED - Murata , Koichi AB - This research addresses a critical gap in construction management by introducing novel indicators for assessing completion through Work-In-Process (WIP) management. The study reveals that project production management practitioners frequently equate physical progress with completion, a misconception contributing to unexpected project delays. Through production systems patterns analysis, this research introduces Rate of WIP (RWIP), Rate of Completion Convergence (RCC), and complementary metrics for multiple production systems completion (Q6) and maximum achievable completion (Q6'). These indicators, grounded in Little's Law principles, provide a framework for monitoring completion trends and predicting schedule overruns. The methodology combines modeling with practitioner surveys, demonstrating how WIP patterns serve as early warning signals for potential delays for unstable production systems, enabling proactive schedule risk management and improved project delivery reliability. KW - WIP KW - completion KW - progress KW - 90% syndrome KW - early warning. 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/2437/pdf L2 - http://iglc.net/Papers/Details/2437 N1 - Export Date: 28 June 2025 DB - IGLC.net DP - IGLC LA - English ER -