diff --git a/contentcuration/contentcuration/migrations/0168_auto_20260627_2219.py b/contentcuration/contentcuration/migrations/0168_auto_20260627_2219.py
new file mode 100644
index 0000000000..b19d0001f1
--- /dev/null
+++ b/contentcuration/contentcuration/migrations/0168_auto_20260627_2219.py
@@ -0,0 +1,39 @@
+# Generated by Django 3.2.24 on 2026-06-27 22:19
+import django.db.models.deletion
+from django.db import migrations
+from django.db import models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("contentcuration", "0167_add_organization"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="invitation",
+            name="organization",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="contentcuration.organization",
+            ),
+        ),
+        migrations.AddConstraint(
+            model_name="invitation",
+            constraint=models.CheckConstraint(
+                check=models.Q(
+                    models.Q(
+                        ("channel__isnull", False), ("organization__isnull", True)
+                    ),
+                    models.Q(
+                        ("channel__isnull", True), ("organization__isnull", False)
+                    ),
+                    _connector="OR",
+                ),
+                name="channel_organization_exclusivity",
+            ),
+        ),
+    ]
diff --git a/contentcuration/contentcuration/models.py b/contentcuration/contentcuration/models.py
index 8c7cee3919..d6bf5084ac 100644
--- a/contentcuration/contentcuration/models.py
+++ b/contentcuration/contentcuration/models.py
@@ -79,13 +79,17 @@
 from contentcuration.constants import feedback
 from contentcuration.constants import user_history
 from contentcuration.constants.contentnode import kind_activity_map
+from contentcuration.constants.organization_roles import ORGANIZATION_ADMIN
+from contentcuration.constants.organization_roles import ORGANIZATION_EDITOR
 from contentcuration.constants.organization_roles import organization_role_choices
+from contentcuration.constants.organization_roles import ORGANIZATION_ROLE_STATUS_ACTIVE
 from contentcuration.constants.organization_roles import (
     organization_role_status_choices,
 )
 from contentcuration.constants.organization_roles import (
     ORGANIZATION_ROLE_STATUS_PENDING,
 )
+from contentcuration.constants.organization_roles import ORGANIZATION_VIEWER
 from contentcuration.db.models.expressions import Array
 from contentcuration.db.models.functions import ArrayRemove
 from contentcuration.db.models.functions import Unnest
@@ -102,6 +106,7 @@
 
 EDIT_ACCESS = "edit"
 VIEW_ACCESS = "view"
+ADMIN_ACCESS = "admin"
 
 DEFAULT_CONTENT_DEFAULTS = {
     "license": None,
@@ -3730,21 +3735,51 @@ class Invitation(models.Model):
     )
     first_name = models.CharField(max_length=100, blank=True)
     last_name = models.CharField(max_length=100, blank=True, null=True)
+    organization = models.ForeignKey(
+        "Organization", null=True, blank=True, on_delete=models.CASCADE
+    )
 
     class Meta:
         verbose_name = "Invitation"
         verbose_name_plural = "Invitations"
+        constraints = [
+            models.CheckConstraint(
+                name="channel_organization_exclusivity",
+                check=(
+                    Q(channel__isnull=False, organization__isnull=True)
+                    | Q(channel__isnull=True, organization__isnull=False)
+                ),
+            )
+        ]
 
     def accept(self):
         user = User.objects.filter(email__iexact=self.email).first()
         if self.channel:
-            # channel is a nullable field, so check that it exists.
-            if self.share_mode == VIEW_ACCESS:
-                self.channel.editors.remove(user)
-                self.channel.viewers.add(user)
-            else:
-                self.channel.viewers.remove(user)
-                self.channel.editors.add(user)
+            self.accept_channel_invitation(user)
+        if self.organization:
+            self.accept_organization_invitation(user)
+
+    def _accept_channel_invitation(self, user):
+        if self.share_mode == VIEW_ACCESS:
+            self.channel.editors.remove(user)
+            self.channel.viewers.add(user)
+        else:
+            self.channel.viewers.remove(user)
+            self.channel.editors.add(user)
+
+    def _accept_organization_invitation(self, user):
+        organization_role = OrganizationRole.objects.create(
+            user=user,
+            organization=self.organization,
+            status=ORGANIZATION_ROLE_STATUS_ACTIVE,
+        )
+        if self.share_mode == VIEW_ACCESS:
+            organization_role.role = ORGANIZATION_VIEWER
+        elif self.share_mode == EDIT_ACCESS:
+            organization_role.role = ORGANIZATION_EDITOR
+        elif self.share_mode == ADMIN_ACCESS:
+            organization_role.role = ORGANIZATION_ADMIN
+        organization_role.save()
 
     @classmethod
     def filter_edit_queryset(cls, queryset, user):