Through our whistleblowing system, you can bring to our attention not only whistleblowing under the EU Whistleblower Protection Directive 2019/1937 and the German Whistleblower Protection Act (valid as of July 2, 2023), but all legal, social and other compliance-related grievances in the business of MHG and its suppliers.
Abuse of the whistleblowing system will not be tolerated. Grossly negligent or intentional false reports are not subject to whistleblower protection and may also lead to the whistleblower being liable for damages. Complaints of a commercial and technical nature do not fall within the scope of our whisteblowing system and are therefore not handled by our contact point. For these types of reports, please contact your respective contact person from our customer service team.
If you would like to make a report, you can reach our internal contact point at This email address is being protected from spambots. You need JavaScript enabled to view it. or by telephone during our business hours at +49 (0) 2159 9189 7757.
The responsible employees are trained accordingly and can receive reports in German and English. In their function, they are independent of instructions and will always treat the information received confidentially. Please note, however, that we are not yet able to accept anonymous reports.
Your report should be as specific as possible. It is helpful to answer the following five questions: Who? What? When? How? Where?
As an alternative to the MMC Hartmetall GmbH whistleblowing system, you can also use the publicly accessible external reporting channels, e.g.:
1. Federal Cartel Office:
Information on cartel violations
2. North Rhine-Westphalia State Data Protection Commissioner:
Your complaint | LDI - North Rhine-Westphalia State Commissioner for Data Protection and Freedom of Information (nrw.de)
„Whistleblower protection is corporate protection“ - following this guiding principle of the Federal Ministry of Justice, we place special emphasis on protecting the whistleblower from reprisals as well as the confidentiality of his or her identity. This is not only in the interest of the whistleblower, but also in our own interest in a functioning early warning system. We only pass on the information received if and to the extent that this is absolutely necessary for the clarification of the facts. Whistleblowers do not have to fear any disadvantages of a business, disciplinary or other nature.
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