diff --git a/CHANGELOG.md b/CHANGELOG.md
index d71559be..0a890124 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- `previousElapsedDurationSeconds` to `NewDraftSubmission`
+
 ## [23.6.0] - 2025-12-04
 
 ### Dependencies
diff --git a/src/services/api/drafts.ts b/src/services/api/drafts.ts
index bcb441a0..86edd8d4 100644
--- a/src/services/api/drafts.ts
+++ b/src/services/api/drafts.ts
@@ -41,6 +41,8 @@ async function uploadDraftData(
       title: draftSubmission.title,
       lastElementUpdated: draftSubmission.lastElementUpdated,
       sectionState: draftSubmission.sectionState,
+      previousElapsedDurationSeconds:
+        draftSubmission.previousElapsedDurationSeconds,
       onProgress,
       abortSignal,
     })
diff --git a/src/services/draft-data-store.ts b/src/services/draft-data-store.ts
index 6ade9e5f..e8a92bda 100644
--- a/src/services/draft-data-store.ts
+++ b/src/services/draft-data-store.ts
@@ -166,5 +166,7 @@ export async function getDraftSubmission(
     createdAt: latestFormSubmissionDraftVersion.createdAt,
     formSubmissionDraftId: formSubmissionDraft.id,
     sectionState: s3SubmissionData.sectionState,
+    previousElapsedDurationSeconds:
+      s3SubmissionData.previousElapsedDurationSeconds,
   })
 }
diff --git a/src/types/submissions.ts b/src/types/submissions.ts
index 7c497613..724f0c89 100644
--- a/src/types/submissions.ts
+++ b/src/types/submissions.ts
@@ -25,6 +25,11 @@ export type NewDraftSubmission = BaseNewFormSubmission & {
   lastElementUpdated?: FormElement
   /** The state of sections before the draft was saved */
   sectionState?: SubmissionTypes.NewS3SubmissionData['sectionState']
+  /**
+   * The elapsed duration in seconds the user took to complete the submission
+   * before the draft was saved
+   */
+  previousElapsedDurationSeconds?: SubmissionTypes.NewS3SubmissionData['previousElapsedDurationSeconds']
 }
 
 export type NewFormSubmission = BaseNewFormSubmission & {