diff --git a/src/writer.py b/src/writer.py
index 9c576e1..7f76c88 100644
--- a/src/writer.py
+++ b/src/writer.py
@@ -67,7 +67,11 @@ def _get_field_value(record: EmployeeRecord, employee_name: str, source_field: s
     if source_field == "Monat (MM.JJ)":
         return _format_month_for_template(record.monat)
     elif source_field == "Stellenanteil in %":
-        return record.stellenanteil
+        try:
+            value = int(float(str(record.stellenanteil).strip()))
+            return f"{value},00"
+        except (ValueError, TypeError):
+            return str(record.stellenanteil)
     elif source_field == "Name":
         return employee_name
     elif source_field == "Antragsnummer":