Health, safety & wellbeing

At Thiess, we work to keep everyone safe everyday by providing a workplace that’s both physically and psychologically safe.

#Health and safety

Across Thiess, safety underpins everything we do. No matter our job or position, each of us has a role to play in ensuring we keep everyone safe everyday.

We have established systems in place to support our people. Our Health & Safety Management System (HSMS) is an integrated set of tools and resources that define how we manage physical health, safety and security at all levels.

We achieve physical safety through these actions:

01

Lead with our Thiess One HSE Culture and Behaviour framework that sets the behaviours we expect from all our people to embed our safety-first culture.

02

Ensure an effective risk management approach through the Our Safety Essentials program, non-negotiable critical controls, and core procedures for key risk activities.

03

Provide engaging leadership to ensure our people have the skills required to develop and embed a strong HSE culture.

04

Use lead indicators to drive positive performance outcomes, change and improvement.

05

Use lag indicators for compliance reporting and to measure effectiveness.

#Wellbeing

At Thiess, our vision everyone safe everyday isn’t just about physical safety, it’s about the whole person. It includes the mental health and wellbeing of all of our people. We want our people to feel safe, respected, valued and able to speak up for themselves and their teammates.

In line with this, Thiess has responded decisively to the Human Rights Commission’s Respect@Work Report, which details the prevalence of bullying, discrimination and sexual harassment across the mining and resources sector.

We’re building psychologically safe and respectful workplaces through these actions:

01

Global industry engagement played a key role in shaping the new Thiess Group Health and Wellbeing Strategy 2026–2029, with key elements of the strategy developed in 2025. As part of this process, significant work to strengthen our ability to deliver on strategic priorities was undertaken.

The strategy also supports enhanced access to mental health and wellbeing resources, including globally accessible Employee Assistance Program (EAP) partnerships, and incorporates evidence based programs such as metabolic risk reduction, which have demonstrated positive impacts on both insurance outcomes and employee health

02

We are actively maintaining and improving our global insured health benefits with over $11 million spent in 2025. This includes the ongoing renewal and upgrade of health benefit offerings to include psychological health cover across all regions to help ensure consistency, competitiveness, and alignment with the evolving needs of our workforce.

03

In 2025, we introduced the Safety Index to replace the Safety Leadership Score to better represent safety performance across the Group. This new approach introduced an additional level of leadership engagement, with offsite leaders actively participating in site visits to conduct Potential Class 1 (PC1) reviews

04

From 2022 to 2025, the Mental Health Roadmap continued to deliver culturally relevant action plans tailored to each region. Building on this foundation, the 2026–2029 roadmap has been developed as a continuation of previous programs.

Through collaboration with regional teams, we aim to ensure each roadmap aligns with local needs and organisational maturity, supporting sustained success and meaningful outcomes across all areas