diff --git a/macavrac_base/__manifest__.py b/macavrac_base/__manifest__.py
index 26268ce..4e7165c 100644
--- a/macavrac_base/__manifest__.py
+++ b/macavrac_base/__manifest__.py
@@ -9,6 +9,7 @@
     "version": "12.0.1.0.0",
     "depends": ["beesdoo_shift", "contacts"],
     "data": [
+        "data/mail_template.xml",
         "views/res_partner.xml",
         "views/shift.xml",
     ],
diff --git a/macavrac_base/data/mail_template.xml b/macavrac_base/data/mail_template.xml
new file mode 100644
index 0000000..8744965
--- /dev/null
+++ b/macavrac_base/data/mail_template.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <!-- Mail template are declared in a NOUPDATE block
+         so users can freely customize/delete them -->
+    <data noupdate="1">
+        <record id="email_template_shift_subscribed" model="mail.template">
+            <field name="name">Shift Subscribed</field>
+            <field name="model_id" ref="model_beesdoo_shift_shift"/>
+        </record>
+        
+        <record id="email_template_shift_unsubscribed" model="mail.template">
+            <field name="name">Shift Unsubscribed</field>
+            <field name="model_id" ref="model_beesdoo_shift_shift"/>
+        </record>
+    </data>
+</odoo>
diff --git a/macavrac_base/models/planning.py b/macavrac_base/models/planning.py
index a0d7c08..b58682b 100644
--- a/macavrac_base/models/planning.py
+++ b/macavrac_base/models/planning.py
@@ -62,6 +62,21 @@ class Task(models.Model):
             rec.can_unsubscribe = True
 
 
+    def write(self, vals):
+        if 'worker_id' in vals:
+            template_unsubscribed = self.env.ref("macavrac_base.email_template_shift_unsubscribed") 
+            template_subscribed = self.env.ref("macavrac_base.email_template_shift_subscribed")
+            new_worker_id = self.env['beesdoo.shift.shift'].browse(vals.get('worker_id'))
+            for record in self:
+                old_worker_id  = record.worker_id
+                if old_worker_id:
+                    template_unsubscribed.send_mail(record.id)
+                if new_worker_id and old_worker_id != new_worker_id:
+                    res = super(Task, record).write(vals)
+                    template_subscribed.send_mail(record.id)
+        return super(Task, self).write(vals)
+
+
 class CooperativeStatus(models.Model):
     _inherit = 'cooperative.status'