Last Planner System

The Last Planner System: How Lean Construction's Weekly Commitment Planning Cuts Rework and Schedule Slippage

The Last Planner System is the core planning methodology of lean construction — pull planning, weekly work planning, make-ready planning, and daily huddles driven by the people actually doing the work rather than top-down schedule mandates. Contractors who implement LPS consistently report fewer schedule overruns, fewer conflicts, and higher trade commitment reliability. But the system requires cultural buy-in that many organizations struggle to develop.