diff --git a/app/common/model/project/ProjectLaborContract.php b/app/common/model/project/ProjectLaborContract.php
index d59b24316..bca9f9a1d 100644
--- a/app/common/model/project/ProjectLaborContract.php
+++ b/app/common/model/project/ProjectLaborContract.php
@@ -33,7 +33,7 @@ class ProjectLaborContract extends BaseModel
 	
 	public function getAnnexAttr($value)
 	{
-		return json_decode($value,true);
+		return !empty($value) ? json_decode($value,true) : '';
 	}
 	
 	public function getSigningDateAttr($value): string