diff --git a/backend/src/services/expirationChecker.js b/backend/src/services/expirationChecker.js
new file mode 100644
index 0000000..e947adc
--- /dev/null
+++ b/backend/src/services/expirationChecker.js
@@ -0,0 +1,107 @@
+const cron = require('node-cron');
+const { db } = require('../database/db');
+const { archiveEvent } = require('./archiveService');
+const logger = require('../utils/logger');
+
+function startExpirationChecker() {
+  // Check every hour for expired events and warnings
+  cron.schedule('0 * * * *', async () => {
+    await checkExpirations();
+  });
+  
+  logger.info('Expiration checker started');
+}
+
+async function checkExpirations() {
+  try {
+    const now = new Date();
+    const warningDate = new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000); // 7 days from now
+    
+    // Check for events needing warning emails
+    const eventsNeedingWarning = await db('events')
+      .where('is_active', true)
+      .where('is_archived', false)
+      .where('expires_at', '<=', warningDate)
+      .where('expires_at', '>', now);
+    
+    for (const event of eventsNeedingWarning) {
+      // Check if warning email already sent
+      const existingWarning = await db('email_queue')
+        .where('event_id', event.id)
+        .where('email_type', 'warning')
+        .first();
+      
+      if (!existingWarning) {
+        await queueExpirationWarning(event);
+      }
+    }
+    
+    // Check for expired events
+    const expiredEvents = await db('events')
+      .where('is_active', true)
+      .where('is_archived', false)
+      .where('expires_at', '<=', now);
+    
+    for (const event of expiredEvents) {
+      await handleExpiredEvent(event);
+    }
+    
+  } catch (error) {
+    logger.error('Error checking expirations:', error);
+  }
+}
+
+async function queueExpirationWarning(event) {
+  const daysRemaining = Math.ceil((new Date(event.expires_at) - new Date()) / (1000 * 60 * 60 * 24));
+  
+  // Queue email to host
+  await db('email_queue').insert({
+    event_id: event.id,
+    recipient_email: event.host_email,
+    email_type: 'warning',
+    email_data: JSON.stringify({
+      event_name: event.event_name,
+      days_remaining: daysRemaining,
+      share_link: event.share_link
+    })
+  });
+  
+  logger.info(`Queued expiration warning for event ${event.slug}`);
+}
+
+async function handleExpiredEvent(event) {
+  try {
+    // Mark as inactive
+    await db('events').where('id', event.id).update({ is_active: false });
+    
+    // Queue expiration emails
+    await db('email_queue').insert([
+      {
+        event_id: event.id,
+        recipient_email: event.host_email,
+        email_type: 'expiration',
+        email_data: JSON.stringify({
+          event_name: event.event_name
+        })
+      },
+      {
+        event_id: event.id,
+        recipient_email: event.admin_email,
+        email_type: 'expiration',
+        email_data: JSON.stringify({
+          event_name: event.event_name,
+          event_slug: event.slug
+        })
+      }
+    ]);
+    
+    // Start archiving process
+    await archiveEvent(event);
+    
+    logger.info(`Handled expiration for event ${event.slug}`);
+  } catch (error) {
+    logger.error(`Error handling expired event ${event.slug}:`, error);
+  }
+}
+
+module.exports = { startExpirationChecker };