diff --git a/app/services/expired_dossiers_deletion_service.rb b/app/services/expired_dossiers_deletion_service.rb
index fa5efd9f7..dbf90af69 100644
--- a/app/services/expired_dossiers_deletion_service.rb
+++ b/app/services/expired_dossiers_deletion_service.rb
@@ -4,6 +4,11 @@ class ExpiredDossiersDeletionService
     delete_expired_brouillons_and_notify
   end
 
+  def self.process_expired_dossiers_en_construction
+    send_en_construction_expiration_notices
+    delete_expired_en_construction_and_notify
+  end
+
   private
 
   def self.send_brouillon_expiration_notices
@@ -26,6 +31,44 @@ class ExpiredDossiersDeletionService
     dossiers_close_to_expiration.update_all(brouillon_close_to_expiration_notice_sent_at: Time.zone.now)
   end
 
+  def self.send_en_construction_expiration_notices
+    dossiers_close_to_expiration = Dossier.en_construction_close_to_expiration
+      .without_en_construction_expiration_notice_sent
+
+    users_to_notify = {}
+    administrations_to_notify = {}
+
+    dossiers_close_to_expiration
+      .includes(:user, :followers_instructeurs, procedure: [:administrateurs])
+      .find_each do |dossier|
+        users_to_notify[dossier.user.email] ||= [dossier.user, Set.new]
+        users_to_notify[dossier.user.email].last.add(dossier)
+
+        (dossier.followers_instructeurs + dossier.procedure.administrateurs).each do |destinataire|
+          administrations_to_notify[destinataire.email] ||= [destinataire, Set.new]
+          administrations_to_notify[destinataire.email].last.add(dossier)
+        end
+      end
+
+    users_to_notify.each_value do |(user, dossiers)|
+      DossierMailer.notify_en_construction_near_deletion(
+        user,
+        dossiers,
+        true
+      ).deliver_later
+    end
+
+    administrations_to_notify.each_value do |(destinataire, dossiers)|
+      DossierMailer.notify_en_construction_near_deletion(
+        destinataire,
+        dossiers,
+        false
+      ).deliver_later
+    end
+
+    dossiers_close_to_expiration.update_all(en_construction_close_to_expiration_notice_sent_at: Time.zone.now)
+  end
+
   def self.delete_expired_brouillons_and_notify
     dossier_to_remove = []
     users_to_notify = {}
@@ -51,4 +94,43 @@ class ExpiredDossiersDeletionService
       dossier.destroy
     end
   end
+
+  def self.delete_expired_en_construction_and_notify
+    dossier_to_remove = []
+    users_to_notify = {}
+    administrations_to_notify = {}
+
+    Dossier.en_construction_expired
+      .includes(:user, :followers_instructeurs, procedure: [:administrateurs])
+      .find_each do |dossier|
+        dossier_to_remove << dossier
+
+        users_to_notify[dossier.user.email] ||= [dossier.user, Set.new]
+        users_to_notify[dossier.user.email].last.add(dossier)
+
+        (dossier.followers_instructeurs + dossier.procedure.administrateurs).each do |destinataire|
+          administrations_to_notify[destinataire.email] ||= [destinataire, Set.new]
+          administrations_to_notify[destinataire.email].last.add(dossier)
+        end
+      end
+
+    users_to_notify.each_value do |(user, dossiers)|
+      DossierMailer.notify_deletion_to_user(
+        user,
+        dossiers.map(&:hash_for_deletion_mail)
+      ).deliver_later
+    end
+
+    administrations_to_notify.each_value do |(destinataire, dossiers)|
+      DossierMailer.notify_deletion_to_administration(
+        destinataire,
+        dossiers.map(&:hash_for_deletion_mail)
+      ).deliver_later
+    end
+
+    dossier_to_remove.each do |dossier|
+      DeletedDossier.create_from_dossier(dossier)
+      dossier.destroy
+    end
+  end
 end
diff --git a/spec/services/expired_dossiers_deletion_service_spec.rb b/spec/services/expired_dossiers_deletion_service_spec.rb
index 1f7fc1f1d..55dc54af5 100644
--- a/spec/services/expired_dossiers_deletion_service_spec.rb
+++ b/spec/services/expired_dossiers_deletion_service_spec.rb
@@ -40,4 +40,61 @@ describe ExpiredDossiersDeletionService do
       end
     end
   end
+
+  describe '#process_expired_dossiers_en_constuction' do
+    let(:draft_expiration) { 1.month + 5.days }
+    let!(:today) { Time.zone.now.at_midnight }
+    let!(:administrateur) { create(:administrateur) }
+    let!(:procedure1) { create(:procedure, :with_instructeur, duree_conservation_dossiers_dans_ds: 6, administrateur: administrateur) }
+    let!(:date_near_expiring) { Date.today - procedure1.duree_conservation_dossiers_dans_ds.months + 1.month }
+    let!(:date_close_to_expiration) { Date.today - procedure1.duree_conservation_dossiers_dans_ds.months - 6.days }
+    let!(:date_not_expired) { Date.today - procedure1.duree_conservation_dossiers_dans_ds.months + 2.months }
+
+    context 'send messages for dossiers expiring soon and delete expired' do
+      let!(:expired_en_construction) { create(:dossier, state: Dossier.states.fetch(:en_construction), procedure: procedure1, en_construction_at: date_close_to_expiration) }
+      let!(:en_construction_close_to_expiration) { create(:dossier, state: Dossier.states.fetch(:en_construction), procedure: procedure1, en_construction_at: date_near_expiring) }
+      let!(:en_construction_close_but_with_notice_sent) { create(:dossier, state: Dossier.states.fetch(:en_construction), procedure: procedure1, en_construction_at: date_near_expiring, en_construction_close_to_expiration_notice_sent_at: Time.zone.now) }
+      let!(:en_construction_close_but_with_notice_sent2) { create(:dossier, state: Dossier.states.fetch(:en_construction), procedure: procedure1, en_construction_at: date_near_expiring, en_construction_close_to_expiration_notice_sent_at: today - (draft_expiration + 1.day)) }
+      let!(:valid_en_construction) { create(:dossier, state: Dossier.states.fetch(:en_construction), procedure: procedure1, en_construction_at: date_not_expired) }
+
+      before do
+        allow(DossierMailer).to receive(:notify_en_construction_near_deletion).and_return(double(deliver_later: nil))
+        allow(DossierMailer).to receive(:notify_deletion_to_administration).and_return(double(deliver_later: nil))
+        allow(DossierMailer).to receive(:notify_deletion_to_user).and_return(double(deliver_later: nil))
+
+        ExpiredDossiersDeletionService.process_expired_dossiers_en_construction
+      end
+
+      it 'not expired dossiers should reload' do
+        expired_en_construction.reload
+        en_construction_close_to_expiration.reload
+        en_construction_close_but_with_notice_sent.reload
+        valid_en_construction.reload
+      end
+
+      it 'expired dossier should be deleted' do
+        expect { en_construction_close_but_with_notice_sent2.reload }.to raise_error(ActiveRecord::RecordNotFound)
+      end
+
+      it 'emails should be sent' do
+        expect(DossierMailer).to have_received(:notify_deletion_to_user).once
+        expect(DossierMailer).to have_received(:notify_deletion_to_user).with(en_construction_close_but_with_notice_sent2.user, [en_construction_close_but_with_notice_sent2.hash_for_deletion_mail])
+
+        expect(DossierMailer).to have_received(:notify_deletion_to_administration).once
+        expect(DossierMailer).to have_received(:notify_deletion_to_administration).with(administrateur, [en_construction_close_but_with_notice_sent2].map(&:hash_for_deletion_mail))
+
+        expect(DossierMailer).to have_received(:notify_en_construction_near_deletion).thrice
+        expect(DossierMailer).to have_received(:notify_en_construction_near_deletion).with(en_construction_close_to_expiration.user, [en_construction_close_to_expiration], true)
+        expect(DossierMailer).to have_received(:notify_en_construction_near_deletion).with(expired_en_construction.user, [expired_en_construction], true)
+      end
+
+      it 'dossiers soon to expire should be marked' do
+        expired_en_construction.reload
+        expect(expired_en_construction.en_construction_close_to_expiration_notice_sent_at).not_to be_nil
+
+        en_construction_close_to_expiration.reload
+        expect(en_construction_close_to_expiration.en_construction_close_to_expiration_notice_sent_at).not_to be_nil
+      end
+    end
+  end
 end