diff --git a/addons/calendar/data/calendar_demo.xml b/addons/calendar/data/calendar_demo.xml
index 65d78071bec..b6fd1077717 100644
--- a/addons/calendar/data/calendar_demo.xml
+++ b/addons/calendar/data/calendar_demo.xml
@@ -45,7 +45,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-03 16:30:00')"/>
             <field name="duration" eval="6.3"/>
             <field name="allday" eval="False"/>
-            <field name="state">open</field>
         </record>
 
         <record id="calendar_event_2" model="calendar.event">
@@ -59,7 +58,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-05 19:00:00')"/>
             <field name="allday" eval="False"/>
             <field name="duration" eval="7.0"/>
-            <field name="state">draft</field>
         </record>
 
         <record id="calendar_event_3" model="calendar.event">
@@ -73,7 +71,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-12 18:55:05')"/>
             <field name="duration" eval="3.0"/>
             <field name="allday" eval="False"/>
-            <field name="state">open</field>
         </record>
 
         <record id="calendar_event_4" model="calendar.event">
@@ -86,7 +83,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-20 10:30:00')"/>
             <field name="duration" eval="2.5"/>
             <field name="allday" eval="False"/>
-            <field name="state">open</field>
         </record>
 
         <record id="calendar_event_5" model="calendar.event">
@@ -98,7 +94,6 @@
             <field name="start" eval="time.strftime('%Y-%m-22')"/>
             <field name="stop" eval="time.strftime('%Y-%m-22')"/>
             <field name="allday" eval="True"/>
-            <field name="state">open</field>
         </record>
 
         <record id="calendar_event_6" model="calendar.event">
@@ -111,7 +106,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-18 10:30:00')"/>
             <field name="duration" eval="8.5"/>
             <field name="allday" eval="False"/>
-            <field name="state">draft</field>
         </record>
 
         <record id="calendar_event_7" model="calendar.event">
@@ -124,7 +118,6 @@
             <field name="stop" eval="time.strftime('%Y-%m-16')"/>
             <field name="duration" eval="8.5"/>
             <field name="allday" eval="True"/>
-            <field name="state">draft</field>
         </record>
 
 
diff --git a/addons/calendar/models/calendar_event.py b/addons/calendar/models/calendar_event.py
index 2d29ec18c61..84a71758551 100644
--- a/addons/calendar/models/calendar_event.py
+++ b/addons/calendar/models/calendar_event.py
@@ -121,7 +121,7 @@ class Meeting(models.Model):
     def _get_public_fields(self):
         return self._get_recurrent_fields() | {
             'id', 'active', 'allday', 'start', 'stop', 'display_start',
-            'display_stop', 'duration', 'user_id', 'state', 'interval',
+            'display_stop', 'duration', 'user_id', 'interval',
             'count', 'rrule', 'recurrence_id', 'show_as'}
 
     @api.model
@@ -189,8 +189,7 @@ class Meeting(models.Model):
             for event in self:
                 event.is_highlighted = False
 
-    name = fields.Char('Meeting Subject', required=True, states={'done': [('readonly', True)]})
-    state = fields.Selection([('draft', 'Unconfirmed'), ('open', 'Confirmed')], string='Status', readonly=True, tracking=True, default='draft')
+    name = fields.Char('Meeting Subject', required=True)
 
     is_attendee = fields.Boolean('Attendee', compute='_compute_attendee')
     attendee_status = fields.Selection(Attendee.STATE_SELECTION, string='Attendee Status', compute='_compute_attendee')
@@ -199,17 +198,17 @@ class Meeting(models.Model):
     start = fields.Datetime('Start', required=True, help="Start date of an event, without time for full days events")
     stop = fields.Datetime('Stop', required=True, help="Stop date of an event, without time for full days events")
 
-    allday = fields.Boolean('All Day', states={'done': [('readonly', True)]}, default=False)
-    start_date = fields.Date('Start Date', compute='_compute_dates', inverse='_inverse_dates', store=True, states={'done': [('readonly', True)]}, tracking=True)
-    start_datetime = fields.Datetime('Start DateTime', compute='_compute_dates', inverse='_inverse_dates', store=True, states={'done': [('readonly', True)]}, tracking=True)
-    stop_date = fields.Date('End Date', compute='_compute_dates', inverse='_inverse_dates', store=True, states={'done': [('readonly', True)]}, tracking=True)
-    stop_datetime = fields.Datetime('End Datetime', compute='_compute_dates', inverse='_inverse_dates', store=True, states={'done': [('readonly', True)]}, tracking=True)  # old date_deadline
+    allday = fields.Boolean('All Day', default=False)
+    start_date = fields.Date('Start Date', compute='_compute_dates', inverse='_inverse_dates', store=True, tracking=True)
+    start_datetime = fields.Datetime('Start DateTime', compute='_compute_dates', inverse='_inverse_dates', store=True, tracking=True)
+    stop_date = fields.Date('End Date', compute='_compute_dates', inverse='_inverse_dates', store=True, tracking=True)
+    stop_datetime = fields.Datetime('End Datetime', compute='_compute_dates', inverse='_inverse_dates', store=True, tracking=True)  # old date_deadline
     event_tz = fields.Selection('_event_tz_get', string='Timezone', default=lambda self: self.env.context.get('tz') or self.user_id.tz)
-    duration = fields.Float('Duration', compute='_compute_dates', inverse='_inverse_duration', compute_sudo=True, states={'done': [('readonly', True)]})
-    description = fields.Text('Description', states={'done': [('readonly', True)]})
-    privacy = fields.Selection([('public', 'Everyone'), ('private', 'Only me'), ('confidential', 'Only internal users')], 'Privacy', default='public', states={'done': [('readonly', True)]}, required=True)
-    location = fields.Char('Location', states={'done': [('readonly', True)]}, tracking=True, help="Location of Event")
-    show_as = fields.Selection([('free', 'Free'), ('busy', 'Busy')], 'Show Time as', states={'done': [('readonly', True)]}, default='busy', required=True)
+    duration = fields.Float('Duration', compute='_compute_dates', inverse='_inverse_duration', compute_sudo=True)
+    description = fields.Text('Description')
+    privacy = fields.Selection([('public', 'Everyone'), ('private', 'Only me'), ('confidential', 'Only internal users')], 'Privacy', default='public', required=True)
+    location = fields.Char('Location', tracking=True, help="Location of Event")
+    show_as = fields.Selection([('free', 'Free'), ('busy', 'Busy')], 'Show Time as', default='busy', required=True)
 
     # linked document
     res_id = fields.Integer('Document ID')
diff --git a/addons/calendar/views/calendar_views.xml b/addons/calendar/views/calendar_views.xml
index bea22a2bf7a..f4b51ca22b3 100644
--- a/addons/calendar/views/calendar_views.xml
+++ b/addons/calendar/views/calendar_views.xml
@@ -72,7 +72,6 @@
                 <field name="stop" string="End Date"/>
                 <field name="partner_ids" readonly="1"/>
                 <field name="location"/>
-                <field name="state" invisible="True"/>
                 <field name="duration" widget="float_time" readonly="1"/>
                 <field name="message_needaction" invisible="1"/>
             </tree>
@@ -96,7 +95,6 @@
                     <widget name="web_ribbon" title="Archived" bg_color="bg-danger" attrs="{'invisible': [('active', '=', True)]}"/>
                     <field name="res_model" invisible="1" />
                     <field name="res_id" invisible="1" />
-                    <field name="state" invisible="1"/>
                     <field name="is_attendee" invisible="1"/>
                     <field name="attendee_status" invisible="1"/>
                     <field name="active" invisible="1"/>
diff --git a/addons/hr_holidays/models/hr_leave.py b/addons/hr_holidays/models/hr_leave.py
index 9915b9825fa..39ab4eee64b 100644
--- a/addons/hr_holidays/models/hr_leave.py
+++ b/addons/hr_holidays/models/hr_leave.py
@@ -847,7 +847,6 @@ class HolidaysRequest(models.Model):
             'start': self.date_from,
             'stop': self.date_to,
             'allday': False,
-            'state': 'open',  # to block that meeting date in the calendar
             'privacy': 'confidential',
             'event_tz': self.user_id.tz,
             'activity_ids': [(5, 0, 0)],