Construction glossary
PTW
Permit to Work
Written by the PleoStack Editorial Team.
Reviewed by Manju Madiwal · Head of Product
Last reviewed 14 July 2026.
Definition
A controlled authorization confirming that defined high-risk work may proceed within a specified area, time window, and set of precautions.
What it means on a project
The practical reading, without treating one region's contract language as universal.
Permits are commonly used for hot work, confined spaces, excavation, electrical isolation, lifting, and work at height.
A permit does not replace risk assessment, competence, supervision, or compliance with local safety requirements.
Terminology, contractual effect, and regulatory requirements vary by jurisdiction and contract. Confirm the definition used on your project before relying on this glossary entry.