diff --git a/CLAUDE.md b/CLAUDE.md
index 05d13f3..66a2d34 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -83,6 +83,11 @@ Each layer depends only on layers below it.
 
 ## Git Workflow
 
+### Before Starting Work
+
+When starting work from a plan, create a new branch matching the plan's scope before
+making any changes. Do not reuse an existing branch from previous work, even if related.
+
 ### Commits
 
 - Format: `type(scope): description`