diff --git a/petshop-api.postman_collection.json b/petshop-api.postman_collection.json
index 73f6d258..d95a5b86 100644
--- a/petshop-api.postman_collection.json
+++ b/petshop-api.postman_collection.json
@@ -167,7 +167,7 @@
             ],
             "body": {
               "mode": "raw",
-              "raw": "{\n  \"username\": \"newcustomer{{$timestamp}}\",\n  \"password\": \"password123\",\n  \"email\": \"new{{$timestamp}}@example.com\",\n  \"fullName\": \"New Customer\"\n}"
+              "raw": "{\n  \"username\": \"newcustomer{{$timestamp}}\",\n  \"password\": \"password123\",\n  \"email\": \"new{{$timestamp}}@example.com\",\n  \"phone\": \"+1-555-01{{$randomInt}}\",\n  \"fullName\": \"New Customer\"\n}"
             }
           },
           "event": [
diff --git a/src/main/java/com/petshop/backend/dto/employee/EmployeeRequest.java b/src/main/java/com/petshop/backend/dto/employee/EmployeeRequest.java
index 0dfa25a8..f5fb9020 100644
--- a/src/main/java/com/petshop/backend/dto/employee/EmployeeRequest.java
+++ b/src/main/java/com/petshop/backend/dto/employee/EmployeeRequest.java
@@ -23,6 +23,7 @@ public class EmployeeRequest {
     @Email(message = "Invalid email format")
     private String email;
 
+    @NotBlank(message = "Phone is required")
     @Size(max = 20, message = "Phone must not exceed 20 characters")
     private String phone;
 
diff --git a/src/main/java/com/petshop/backend/exception/GlobalExceptionHandler.java b/src/main/java/com/petshop/backend/exception/GlobalExceptionHandler.java
index bfcfe03d..e055ea44 100644
--- a/src/main/java/com/petshop/backend/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/petshop/backend/exception/GlobalExceptionHandler.java
@@ -3,6 +3,8 @@ package com.petshop.backend.exception;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
+import org.springframework.web.server.ResponseStatusException;
 import org.springframework.validation.FieldError;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -82,6 +84,27 @@ public class GlobalExceptionHandler {
         return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(error);
     }
 
+    @ExceptionHandler(MethodArgumentTypeMismatchException.class)
+    public ResponseEntity<ErrorResponse> handleMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException ex) {
+        ErrorResponse error = new ErrorResponse(
+                HttpStatus.BAD_REQUEST.value(),
+                "Invalid value for parameter: " + ex.getName(),
+                LocalDateTime.now()
+        );
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(error);
+    }
+
+    @ExceptionHandler(ResponseStatusException.class)
+    public ResponseEntity<ErrorResponse> handleResponseStatusException(ResponseStatusException ex) {
+        String message = ex.getReason() != null ? ex.getReason() : ex.getMessage();
+        ErrorResponse error = new ErrorResponse(
+                ex.getStatusCode().value(),
+                message,
+                LocalDateTime.now()
+        );
+        return ResponseEntity.status(ex.getStatusCode()).body(error);
+    }
+
     @ExceptionHandler(Exception.class)
     public ResponseEntity<ErrorResponse> handleGenericException(Exception ex) {
         ErrorResponse error = new ErrorResponse(