diff --git a/app.py b/app.py
index cc2e297..14df504 100644
--- a/app.py
+++ b/app.py
@@ -320,10 +320,17 @@ logger.info("Blueprints registered")
 
 @login_manager.user_loader
 def load_user(user_id):
-    """Load user from database"""
+    """Load user from database with eager-loaded relationships"""
+    from sqlalchemy.orm import joinedload
     db = SessionLocal()
     try:
-        return db.query(User).filter_by(id=int(user_id)).first()
+        user = db.query(User).options(
+            joinedload(User.company_associations)
+        ).filter_by(id=int(user_id)).first()
+        if user:
+            # Force-load associations before detaching from session
+            _ = user.company_associations
+        return user
     finally:
         db.close()