What we covered in our chat
In this episode of the Well Workplaces podcast, I spoke with Sasha D’Arcy, Organisational Psychologist and People & Organisational Health Lead at Medibank, about the thinking behind the Healthiest Workplace Index and why organisations need to move beyond disconnected wellbeing initiatives toward a more systems‑based approach to health at work.
From initiatives to systems thinking
A key theme of our conversation was the limitation of wellbeing initiatives that focus on symptom management rather than root causes. Sasha explained that while individual tools and programs can help, they don’t address poorly designed work. As she put it, “you can’t meditate your way out of poor job design.”
The Healthiest Workplace Index brings together subjective data — how people feel — with objective data about what contributes to those feelings. This includes factors like workload, leadership behaviour, autonomy, clarity, safety, flexibility and recovery. By looking at these elements together, the Index helps leaders see what is often invisible and take accountability for changing the system, not just adding new wellbeing offerings.
The research behind the Index
Developed in partnership with Macquarie University’s Health at Work Research Unit, the Index draws on an extensive review of global research. Sasha shared that leadership health orientation emerged as the single strongest factor influencing health at work, while workload and workload management were the biggest contributors to poor outcomes.
Rather than eliminating demands — which is unrealistic — the Index focuses on balancing demands with the right resources, aligning with established models like Job Demands–Resources. Importantly, it examines health at organisational, team and individual levels, recognising how leadership behaviour, team dynamics and personal health confidence all interact.
Applying the Index in practice
Within Medibank, the Index is designed as a diagnostic tool, not a vanity score. Sasha emphasised that wellbeing work is never “done” — policies like flexible work or parental leave only matter if they are genuinely accessible and equitably experienced across teams.
The Index also supports experimentation, including Medibank’s four‑day work week pilots. By tracking indicators such as leave utilisation, recovery and workload clarity, leaders can spot early signs of unsustainable work before burnout or attrition occurs.
Final thoughts
This conversation reinforced that healthy workplaces don’t happen by accident. The Healthiest Workplace Index reframes wellbeing as a design responsibility, not a perk — giving leaders the data and insight they need to build work that supports health, performance and sustainability over the long term.
Written by Tom Bosna
May 2026