diff --git a/peachjam/admin.py b/peachjam/admin.py
index 5e91b4cd9..8f7c68968 100644
--- a/peachjam/admin.py
+++ b/peachjam/admin.py
@@ -86,6 +86,7 @@
     citations_processor,
     pj_settings,
 )
+from peachjam.models.activity import EditActivity
 from peachjam.plugins import plugins
 from peachjam.resources import (
     ArticleResource,
@@ -286,6 +287,8 @@ def value_from_datadict(self, data, files, name):
 
 
 class DocumentForm(forms.ModelForm):
+    # to track edit activity
+    edit_activity_start = forms.DateTimeField(widget=forms.HiddenInput(), required=True)
     content_html = forms.CharField(
         widget=CKEditorWidget(
             extra_plugins=["lawwidgets"],
@@ -338,6 +341,8 @@ def __init__(self, data=None, *args, **kwargs):
         if self.instance and self.instance.content_html_is_akn:
             self.fields["content_html"].widget.attrs["readonly"] = True
 
+        self.fields["edit_activity_start"].initial = timezone.now()
+
     def clean_content_html(self):
         # prevent CKEditor-based editing of AKN HTML
         if self.instance.content_html_is_akn:
@@ -527,6 +532,15 @@ def save_model(self, request, obj, form, change):
 
         super().save_model(request, obj, form, change)
 
+        # update the edit activity end time
+        EditActivity.objects.create(
+            document=obj,
+            user=request.user,
+            stage="corrections" if change else "initial",
+            start=form.cleaned_data["edit_activity_start"],
+            end=timezone.now(),
+        )
+
     def save_related(self, request, form, formsets, change):
         # after saving related models, also save this model again so that it can update fields based on related changes
         # if date, title, or content changed, re-extract citations or if new document
diff --git a/peachjam/migrations/0165_editactivity.py b/peachjam/migrations/0165_editactivity.py
new file mode 100644
index 000000000..e4c98cf4b
--- /dev/null
+++ b/peachjam/migrations/0165_editactivity.py
@@ -0,0 +1,61 @@
+# Generated by Django 4.2.14 on 2024-10-10 13:20
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ("peachjam", "0164_peachjamsettings_robots_txt"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="EditActivity",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("start", models.DateTimeField()),
+                ("end", models.DateTimeField()),
+                ("seconds", models.IntegerField()),
+                (
+                    "stage",
+                    models.CharField(
+                        choices=[
+                            ("initial", "initial"),
+                            ("corrections", "corrections"),
+                        ],
+                        default="initial",
+                        max_length=255,
+                    ),
+                ),
+                (
+                    "document",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="peachjam.coredocument",
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ("start",),
+            },
+        ),
+    ]
diff --git a/peachjam/models/activity.py b/peachjam/models/activity.py
new file mode 100644
index 000000000..6a7006194
--- /dev/null
+++ b/peachjam/models/activity.py
@@ -0,0 +1,26 @@
+from django.contrib.auth.models import User
+from django.db import models
+
+from peachjam.models import CoreDocument
+
+
+class EditActivity(models.Model):
+    """Time spent editing a document via the admin area."""
+
+    document = models.ForeignKey(CoreDocument, on_delete=models.CASCADE)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    start = models.DateTimeField()
+    end = models.DateTimeField()
+    seconds = models.IntegerField()
+    stage = models.CharField(
+        max_length=255,
+        choices=(("initial", "initial"), ("corrections", "corrections")),
+        default="initial",
+    )
+
+    class Meta:
+        ordering = ("start",)
+
+    def save(self, *args, **kwargs):
+        self.seconds = (self.end - self.start).total_seconds()
+        super().save(*args, **kwargs)
diff --git a/peachjam/templates/admin/change_form.html b/peachjam/templates/admin/change_form.html
index 6a9b3a053..84b743b1e 100644
--- a/peachjam/templates/admin/change_form.html
+++ b/peachjam/templates/admin/change_form.html
@@ -1,5 +1,9 @@
 {% extends "admin/change_form.html" %}
 {% load i18n comments humanize static %}
+{% block form_top %}
+  {{ block.super }}
+  {% if adminform.form.edit_activity_start %}{{ adminform.form.edit_activity_start.as_hidden }}{% endif %}
+{% endblock %}
 {% block extra_actions %}
   {{ block.super }}
   {% if PEACHJAM_SETTINGS.editor_help_link and adminform.model_admin.help_topic %}