diff --git a/app/controllers/establishment.controller.js b/app/controllers/establishment.controller.js
index e2f460e..e7c7067 100644
--- a/app/controllers/establishment.controller.js
+++ b/app/controllers/establishment.controller.js
@@ -1831,6 +1831,15 @@ exports.establishmentBulkUpload = async (req, res) => {
       const autoPassword = generateSecurePassword(12);
       const hashed = await bcrypt.hash(autoPassword, 10);
 
+      const existingAdminUser = await User.findOne({ where: { email:p.email, is_active: true } });
+    if (existingAdminUser) {
+      logger.warn(`Email already exists in Admin Users: ${p.email}`);
+      return res.status(409).send({
+        status: "failed",
+        message: "This email address is already registered in the admin users."
+      });
+    }
+
       await EstablishmentUser.create({
         establishment_id: est.id,
         name: r.user_name,