diff --git a/app/db_mgr.py b/app/db_mgr.py
index bd1fa95..a8c7473 100644
--- a/app/db_mgr.py
+++ b/app/db_mgr.py
@@ -8,6 +8,39 @@ from app.models import db, Period, Project, Category
 charge_unit = 100
 
 
+def category_labels():
+    """
+    Build a list of dicts of the categorized labels for form display:
+
+    [{'name': 'Domaine',
+      'labels': [{'id': 1, 'name': 'R&T'},
+                 {'id': 3, 'name': 'Autres 2'},
+                        .
+                        .
+                        .
+                 {'id': 11, 'name': 'Instrumentation Sol'}],
+      },
+     {'name': 'Pôle',
+      'labels': [{'id': 12, 'name': 'Astronomie'},
+                 {'id': 14, 'name': 'Solaire'},
+                        .
+                        .
+                        .
+                 {'id': 21, 'name': 'Administration'}]
+      }]
+
+
+    :return:
+    """
+    _categories = []
+    for _c in Category.query.all():
+        _category = {'name': _c.name, 'labels': []}
+        for _l in _c.labels:
+            _category['labels'].append({'id': _l.label.id, 'name': _l.label.name})
+        _categories.append(_category)
+    return _categories
+
+
 def projects():
     """
     Build the list of all projects, with their charges for the current period
diff --git a/tests/backend_tests.py b/tests/backend_tests.py
index e4dacb6..e8b8b95 100644
--- a/tests/backend_tests.py
+++ b/tests/backend_tests.py
@@ -74,3 +74,9 @@ class DbMgrTestCase(BaseTestCase):
         stacked_charges = db_mgr.charges_by_project_stacked(60)
         # Waiting for 17 periods + headers line
         self.assertEqual(18, len(stacked_charges))
+
+    def test_category_labels(self):
+        category_labels = db_mgr.category_labels()
+        categories = [_cl['name'] for _cl in category_labels]
+        self.assertEqual(['Domaine', 'Pôle'], categories)
+
--
libgit2 0.21.2