diff --git a/spec/jobs/action_cable_broadcast_job_spec.rb b/spec/jobs/action_cable_broadcast_job_spec.rb
new file mode 100644
index 000000000..396a8a637
--- /dev/null
+++ b/spec/jobs/action_cable_broadcast_job_spec.rb
@@ -0,0 +1,105 @@
+require 'rails_helper'
+
+RSpec.describe ActionCableBroadcastJob do
+  include Events::Types
+
+  let(:account) { create(:account) }
+  let(:conversation) { create(:conversation, account: account) }
+  let(:members) { %w[test_member_1 test_member_2] }
+  let(:event_name) { 'test.event' }
+  let(:data) { { account_id: account.id, id: conversation.display_id } }
+  let(:timestamp) { Time.zone.now.to_f }
+
+  describe '#perform' do
+    context 'when members are blank' do
+      it 'returns without broadcasting' do
+        expect(ActionCable.server).not_to receive(:broadcast)
+        described_class.perform_now([], event_name, data, timestamp)
+      end
+    end
+
+    context 'when event is not a conversation update event' do
+      it 'broadcasts original data to all members' do
+        members.each do |member|
+          expect(ActionCable.server).to receive(:broadcast).with(
+            member,
+            {
+              event: event_name,
+              data: data,
+              event_timestamp: timestamp
+            }
+          )
+        end
+
+        described_class.perform_now(members, event_name, data, timestamp)
+      end
+    end
+
+    context 'when event is a conversation update event' do
+      let(:conversation_data) { conversation.push_event_data.merge(account_id: account.id) }
+      let(:conversation_update_events) do
+        [
+          Events::Types::CONVERSATION_READ,
+          Events::Types::CONVERSATION_UPDATED,
+          Events::Types::TEAM_CHANGED,
+          Events::Types::ASSIGNEE_CHANGED,
+          Events::Types::CONVERSATION_STATUS_CHANGED
+        ]
+      end
+
+      it 'refreshes and broadcasts latest conversation data for each update event' do
+        conversation_update_events.each do |update_event|
+          members.each do |member|
+            expect(ActionCable.server).to receive(:broadcast).with(
+              member,
+              {
+                event: update_event,
+                data: conversation_data,
+                event_timestamp: timestamp
+              }
+            )
+          end
+
+          described_class.perform_now(members, update_event, data, timestamp)
+        end
+      end
+
+      context 'when conversation is not found' do
+        let(:data) { { account_id: account.id, id: 0 } }
+
+        it 'raises ActiveRecord::RecordNotFound' do
+          expect do
+            described_class.perform_now(
+              members,
+              Events::Types::CONVERSATION_UPDATED,
+              data,
+              timestamp
+            )
+          end.to raise_error(ActiveRecord::RecordNotFound)
+        end
+      end
+    end
+  end
+
+  describe 'queue' do
+    it 'uses critical queue' do
+      expect(described_class.queue_name).to eq('critical')
+    end
+  end
+
+  describe 'timestamp handling' do
+    it 'includes event_timestamp in broadcast data' do
+      expect(ActionCable.server).to receive(:broadcast).with(
+        members.first,
+        hash_including(event_timestamp: timestamp)
+      ).once
+
+      expect(ActionCable.server).to receive(:broadcast).with(
+        members.last,
+        hash_including(event_timestamp: timestamp)
+      ).once
+
+      described_class.perform_now(members, event_name, data, timestamp)
+    end
+  end
+end