diff --git a/app/Models/ESign/EsignSigner.php b/app/Models/ESign/EsignSigner.php
index 2260571d..84596b02 100644
--- a/app/Models/ESign/EsignSigner.php
+++ b/app/Models/ESign/EsignSigner.php
@@ -10,6 +10,22 @@ class EsignSigner extends Model
 {
     protected $table = 'esign_signers';
 
+    // 역할 상수
+    public const ROLE_CREATOR = 'creator';
+
+    public const ROLE_COUNTERPART = 'counterpart';
+
+    // 상태 상수
+    public const STATUS_WAITING = 'waiting';
+
+    public const STATUS_NOTIFIED = 'notified';
+
+    public const STATUS_AUTHENTICATED = 'authenticated';
+
+    public const STATUS_SIGNED = 'signed';
+
+    public const STATUS_REJECTED = 'rejected';
+
     protected $fillable = [
         'tenant_id',
         'contract_id',