diff --git a/.deepwork.policy.yml b/.deepwork.policy.yml
index f91a1c22..b5a41768 100644
--- a/.deepwork.policy.yml
+++ b/.deepwork.policy.yml
@@ -17,3 +17,27 @@
     2. Check that file paths and directory structures are still correct
     3. Ensure component descriptions reflect actual behavior
     4. Update any diagrams or flows that may have changed
+
+- name: "Standard Jobs Source of Truth"
+  trigger:
+    - ".deepwork/jobs/deepwork_jobs/**/*"
+    - ".deepwork/jobs/deepwork_policy/**/*"
+  safety:
+    - "src/deepwork/standard_jobs/deepwork_jobs/**/*"
+    - "src/deepwork/standard_jobs/deepwork_policy/**/*"
+  instructions: |
+    You modified files in `.deepwork/jobs/deepwork_jobs/` or `.deepwork/jobs/deepwork_policy/`.
+
+    **These are installed copies, NOT the source of truth!**
+
+    Standard jobs (deepwork_jobs, deepwork_policy) must be edited in their source location:
+    - Source: `src/deepwork/standard_jobs/[job_name]/`
+    - Installed copy: `.deepwork/jobs/[job_name]/` (DO NOT edit directly)
+
+    **Required action:**
+    1. Revert your changes to `.deepwork/jobs/deepwork_*/`
+    2. Make the same changes in `src/deepwork/standard_jobs/[job_name]/`
+    3. Run `deepwork install --platform claude` to sync changes
+    4. Verify the changes propagated correctly
+
+    See CLAUDE.md section "CRITICAL: Editing Standard Jobs" for details.
\ No newline at end of file