diff --git a/helpers/validation.js b/helpers/validation.js
index 1b6738a..149d11d 100644
--- a/helpers/validation.js
+++ b/helpers/validation.js
@@ -63,9 +63,38 @@ const deviceUpdateSchema = Joi.object({
     })
 }).min(1);
 
+// ========================
+// Users Validation
+// ========================
+const userSchema = Joi.object({
+  fullname: Joi.string().min(3).max(100).required(),
+  name: Joi.string().alphanum().min(3).max(50).required(),
+  email: Joi.string().email().required(),
+  phone: Joi.string()
+    .pattern(/^(?:\+62|0)8\d{7,10}$/)
+    .required()
+    .messages({
+      'string.pattern.base':
+        'Phone number must be a valid Indonesian number in format +628XXXXXXXXX'
+    }),
+  password: Joi.string()
+    .min(8)
+    .pattern(/[A-Z]/, 'uppercase letter')
+    .pattern(/[a-z]/, 'lowercase letter')
+    .pattern(/\d/, 'number')
+    .pattern(/[!@#$%^&*(),.?":{}|<>]/, 'special character')
+    .required()
+    .messages({
+      'string.min': 'Password must be at least 8 characters long',
+      'string.pattern.name': 'Password must contain at least one {#name}'
+    }),
+  role_id : Joi.number().integer().min(1)
+});
+
 module.exports = {
   registerSchema,
   loginSchema,
   deviceSchema,
-  deviceUpdateSchema
+  deviceUpdateSchema,
+  userSchema,
 };