Construction glossary
WBS
Work Breakdown Structure
Written by the PleoStack Editorial Team.
Reviewed by Manju Madiwal · Head of Product
Last reviewed 14 July 2026.
Definition
A hierarchical breakdown of a project's scope into manageable deliverables, work packages, activities, and tasks.
What it means on a project
The practical reading, without treating one region's contract language as universal.
A WBS gives schedules, costs, responsibilities, progress, inspections, and reporting a common structure.
It describes the work that must be delivered; sequencing and dates are normally developed in the project schedule.
Terminology, contractual effect, and regulatory requirements vary by jurisdiction and contract. Confirm the definition used on your project before relying on this glossary entry.