diff --git a/src/clients/vitacore/schema.py b/src/clients/vitacore/schema.py
index 2fff5bf..7656095 100644
--- a/src/clients/vitacore/schema.py
+++ b/src/clients/vitacore/schema.py
@@ -207,11 +207,13 @@ class WorkerModel(BaseModel):
     )
     firstName: str = Field(title='Имя', examples=['Владимир'])
     lastName: str = Field(title='Фамилия', examples=['Камашев'])
-    middleName: str = Field(title='Отчество', examples=['Михайлович'])
+    middleName: str | None = Field(
+        title='Отчество', examples=['Михайлович'], default=None
+    )
     birthDate: datetime | None = Field(
         title='Дата рождения', examples=['30.05.1961'], default=None
     )
-    positions: list[WorkersPositionModel]
+    positions: list[WorkersPositionModel] = []
 
 
 class WorkersModel(BaseModel):