Wien Holding has established a whistleblower system for all its companies – including Mozarthaus Vienna. It enables the confidential reporting of violations of EU law, in accordance with the EU Whistleblowing Directive and the Austrian Whistleblower Protection Act.

You can reach the ombudsman's office at the following contact details:

Website: Whistleblower system (in German)
Phone hotline: +43 7242 306677 810 (weekdays from 8:00 am to 8:00 pm) 
Email: hinweis@meinhinweis.at

Here you can find FAQs on the whistleblower system (in German).