diff --git a/flaschengeist/plugins/events/models.py b/flaschengeist/plugins/events/models.py
index d1dee02..2cbfd6e 100644
--- a/flaschengeist/plugins/events/models.py
+++ b/flaschengeist/plugins/events/models.py
@@ -65,8 +65,10 @@ class Job(db.Model, ModelSerializeMixin):
     end: Optional[datetime] = db.Column(UtcDateTime)
     type: Union[JobType, int] = db.relationship("JobType")
     comment: Optional[str] = db.Column(db.String(256))
-    locked: bool = db.Column(db.Boolean())
-    services: list[Service] = db.relationship("Service", back_populates="job_")
+    locked: bool = db.Column(db.Boolean(), default=False, nullable=False)
+    services: list[Service] = db.relationship(
+        "Service", back_populates="job_", cascade="save-update, merge, delete, delete-orphan"
+    )
     required_services: float = db.Column(db.Numeric(precision=4, scale=2, asdecimal=False), nullable=False)
 
     event_ = db.relationship("Event", back_populates="jobs")