diff --git a/RIGS/models.py b/RIGS/models.py
index a186ca80..8de9c0b3 100644
--- a/RIGS/models.py
+++ b/RIGS/models.py
@@ -463,6 +463,12 @@ class Event(models.Model, RevisionMixin):
         hasStartAndEnd = self.has_start_time and self.has_end_time
         if startEndSameDay and hasStartAndEnd and self.start_time > self.end_time:
             raise ValidationError('Unless you\'ve invented time travel, the event can\'t finish before it has started.')
+        
+        if self.access_at is not None:
+            if self.access_at.date() > self.start_date: 
+                raise ValidationError('Regardless of what some clients might think, access time cannot be after the event has started.')
+            elif self.start_time is not None and self.start_date == self.access_at.date() and self.access_at.time() > self.start_time:
+                raise ValidationError('Regardless of what some clients might think, access time cannot be after the event has started.')
 
     def save(self, *args, **kwargs):
         """Call :meth:`full_clean` before saving."""
diff --git a/RIGS/tests/test_rigs.py b/RIGS/tests/test_rigs.py
index 732cbf14..8f695d74 100644
--- a/RIGS/tests/test_rigs.py
+++ b/RIGS/tests/test_rigs.py
@@ -203,6 +203,33 @@ class TestEventCreate(BaseRigboardTest):
         # Should work
         self.page.submit()
         self.assertTrue(self.page.success)
+        
+    def test_access_validation(self):
+        self.select_event_type("Rig")
+
+        self.page.person_selector.toggle()
+        self.assertTrue(self.page.person_selector.is_open)
+        self.page.person_selector.search(self.client.name)
+        self.page.person_selector.set_option(self.client.name, True)
+        # TODO This should not be necessary, normally closes automatically
+        self.page.person_selector.toggle()
+        self.assertFalse(self.page.person_selector.is_open)
+        
+        self.page.name = "Access Validation Test"
+        
+        self.page.start_date = datetime.date(2020, 1, 1)
+        self.page.access_at = datetime.datetime(2020, 1, 5, 10)
+                                            
+        self.page.submit()
+        self.assertFalse(self.page.success)
+        self.assertIn("access time cannot be after the event has started.", self.page.errors["General form errors"][0])
+        
+        #Fix it
+        self.page.access_at = datetime.datetime(2020, 1, 1, 10)
+        
+        # Should work
+        self.page.submit()
+        self.assertTrue(self.page.success)
 
     def test_event_item_creation(self):
         self.select_event_type("Rig")
@@ -217,7 +244,8 @@ class TestEventCreate(BaseRigboardTest):
         self.page.person_selector.toggle()
         self.assertFalse(self.page.person_selector.is_open)
 
-        self.page.start_date = datetime.date(1984, 1, 1)
+        # Note to self, don't set dates before 2014, which is the beginning of VAT as far as the tests are concerned...
+        self.page.start_date = datetime.date(2084, 1, 1)
 
         modal = self.page.add_event_item()
         self.wait.until(animation_is_finished())