diff --git a/easy_my_coop/i18n/fr_BE.po b/easy_my_coop/i18n/fr_BE.po
index 162ce5e..23b370e 100644
--- a/easy_my_coop/i18n/fr_BE.po
+++ b/easy_my_coop/i18n/fr_BE.po
@@ -2135,6 +2135,11 @@ msgstr "Date de la demande"
 msgid "Request date"
 msgstr "Date de la demande"
 
+#. module: easy_my_coop
+#: model:ir.model.fields,field_description:easy_my_coop.field_operation_request_effective_date
+msgid "Effective date"
+msgstr "Date effective"
+
 #. module: easy_my_coop
 #: model:ir.ui.view,arch_db:easy_my_coop.view_subscription_request_filter
 msgid "Request type"
diff --git a/easy_my_coop/models/operation_request.py b/easy_my_coop/models/operation_request.py
index 1a00377..09a1a90 100644
--- a/easy_my_coop/models/operation_request.py
+++ b/easy_my_coop/models/operation_request.py
@@ -23,6 +23,7 @@ class operation_request(models.Model):
 
     request_date = fields.Date(string='Request date',
                                default=lambda self: self.get_date_now())
+    effective_date = fields.Date(string='Effective date', required=False)
     partner_id = fields.Many2one('res.partner',
                                  string='Cooperator',
                                  domain=[('member', '=', True)],
@@ -87,6 +88,13 @@ class operation_request(models.Model):
     invoice = fields.Many2one('account.invoice',
                               string="Invoice")
 
+    @api.multi
+    @api.constrains("effective_date")
+    def _constrain_effective_date(self):
+        for obj in self:
+            if obj.effective_date > fields.Datetime.now():
+                raise ValidationError("The effective date can not be in the future.")\
+
     @api.multi
     def approve_operation(self):
         for rec in self:
@@ -211,7 +219,10 @@ class operation_request(models.Model):
     def execute_operation(self):
         self.ensure_one()
 
-        effective_date = self.get_date_now()
+        if self.effective_date:
+            effective_date = self.effective_date
+        else:
+            effective_date = self.get_date_now()
         sub_request = self.env['subscription.request']
 
         for rec in self:
diff --git a/easy_my_coop/view/operation_request_view.xml b/easy_my_coop/view/operation_request_view.xml
index c628095..5f6d03f 100644
--- a/easy_my_coop/view/operation_request_view.xml
+++ b/easy_my_coop/view/operation_request_view.xml
@@ -33,6 +33,7 @@
 	       				<group>
 		       				<group>
 		       					<field name="request_date" attrs="{'readonly':[('state','!=','draft')]}"/>
+								<field name="effective_date" attrs="{'readonly':[('state','!=','draft')]}"/>
 			          			<field name="operation_type" attrs="{'readonly':[('state','!=','draft')]}"/>
 			          			<field name="receiver_not_member" attrs="{'invisible':[('operation_type','!=','transfer')]}"/>
 			          			<field name="partner_id" options="{'no_create':True}" attrs="{'readonly':[('state','!=','draft')]}"/>