diff --git a/apps/participation/migrations/0006_phase.py b/apps/participation/migrations/0006_phase.py
new file mode 100644
index 0000000..3ab256e
--- /dev/null
+++ b/apps/participation/migrations/0006_phase.py
@@ -0,0 +1,61 @@
+# Generated by Django 3.1.1 on 2020-10-20 10:39
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+def register_phases(apps, schema_editor):
+    """
+    Import the different phases of the action
+    """
+    Phase = apps.get_model("participation", "phase")
+    Phase.objects.get_or_create(
+        phase_number=1,
+        description="Soumission des vidéos",
+    )
+    Phase.objects.get_or_create(
+        phase_number=2,
+        description="Phase de questions",
+    )
+    Phase.objects.get_or_create(
+        phase_number=3,
+        description="Phase d'échanges entre les équipes",
+    )
+    Phase.objects.get_or_create(
+        phase_number=4,
+        description="Soumission de la vidéo de synthèse de l'échange",
+    )
+
+
+def reverse_phase_registering(apps, schema_editor):
+    """
+    Drop all phases in order to unapply this migration.
+    """
+    Phase = apps.get_model("participation", "phase")
+    Phase.objects.all().delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('participation', '0005_participation_valid'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Phase',
+            fields=[
+                ('phase_number', models.AutoField(primary_key=True, serialize=False, unique=True, verbose_name='phase number')),
+                ('description', models.CharField(max_length=255, verbose_name="phase description")),
+                ('start', models.DateTimeField(default=django.utils.timezone.now, verbose_name='start date of the given phase')),
+                ('end', models.DateTimeField(default=django.utils.timezone.now, verbose_name='end date of the given phase')),
+            ],
+            options={
+                'verbose_name': 'phase',
+                'verbose_name_plural': 'phases',
+            },
+        ),
+        migrations.RunPython(
+            register_phases,
+            reverse_phase_registering,
+        ),
+    ]
diff --git a/apps/participation/models.py b/apps/participation/models.py
index c3f3e4e..2ec6233 100644
--- a/apps/participation/models.py
+++ b/apps/participation/models.py
@@ -6,6 +6,7 @@ from django.core.validators import RegexValidator
 from django.db import models
 from django.db.models import Index
 from django.urls import reverse_lazy
+from django.utils import timezone
 from django.utils.crypto import get_random_string
 from django.utils.text import format_lazy
 from django.utils.translation import gettext_lazy as _
@@ -168,3 +169,34 @@ class Video(models.Model):
     class Meta:
         verbose_name = _("video")
         verbose_name_plural = _("videos")
+
+
+class Phase(models.Model):
+    phase_number = models.AutoField(
+        primary_key=True,
+        unique=True,
+        verbose_name=_("phase number"),
+    )
+
+    description = models.CharField(
+        max_length=255,
+        verbose_name=_("phase description"),
+    )
+
+    start = models.DateTimeField(
+        verbose_name=_("start date of the given phase"),
+        default=timezone.now,
+    )
+
+    end = models.DateTimeField(
+        verbose_name=_("end date of the given phase"),
+        default=timezone.now,
+    )
+
+    def __str__(self):
+        return _("Phase {phase_number:d} starts on {start:%Y-%m-%d %H:%M:} and ends on {end:%Y-%m-%d %H:%M}")\
+            .format(phase_number=self.phase_number, start=self.start, end=self.end)
+
+    class Meta:
+        verbose_name = _("phase")
+        verbose_name_plural = _("phases")