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Make a report to Stopline


1300 30 45 50 – Australia


Send an email to: [email protected]

Make a report via your smartphone.


Attention: Komatsu, c/o Stopline, PO Box 403,
Diamond Creek, VIC 3089, Australia

NRS - National Relay Service

The NRS is a vital service that allows people who are deaf, hard of hearing or have a speech impairment to make and receive phone calls.

Whistleblower Hotline

This website is part of the service provided by Stopline Pty Ltd to Komatsu people, contractors and other stakeholders to enable the reporting of any issue that may adversely affect Komatsu or its people or reputation. Further information on the sorts of matters that should be reported and the ways that they can be reported are found throughout this site. We encourage you to explore this site, where you will find access to the Komatsu Code of Conduct and answers to some of the most frequently asked questions about the service provided to Komatsu by Stopline and how it works.

Dear Colleagues,

Maintaining our commitment to the Komatsu Code of Conduct is an important step in working towards achieving our vision, mission and business objectives. At Komatsu we have a whistleblower program that empowers you to play an active role in the elimination of improper conduct in the workplace.

This program now provides access to Stopline, a confidential, independent provider of whistleblowing services who will take full details of your concerns via telephone, mail, email, fax or this website. It is important to remember that we encourage you to report directly to your supervisor, HR or the Risk and Assurance Department if you feel comfortable in doing so.  However, the whistleblower program is there if these avenues do not seem appropriate. The whistleblower process enables individuals to maintain anonymity should they so desire. Stopline is available to all Komatsu employees, contractors or designated stakeholders and translation services can be provided if requested.

As well as the disclosure process, the website provides answers to some of the most frequently asked questions for your reference. I believe that good corporate governance has the capacity to differentiate us from our competitors and enhance our reputation in the eyes of our competitors and this website is just another example of Komatsu commitment to best practice.

Sean Taylor
CEO and Managing Director