Cass Nicholson on Why I Built The Neurodivergence Voice

The diagnosis nobody tells you about

I was well into my career — nearly two decades across government and private sectors,  when I got the diagnosis.

ADHD. Late in life. And with it came something I wasn’t prepared for: the complete unravelling of the story I’d been telling myself about who I was.

Not a crisis. More like an operating system that finally made sense after years of feeling something was fundamentally wrong with me.

The grief came later. So did the rage. And eventually somewhere between the two, a very specific kind of clarity.

What I saw when I looked around

I started paying attention differently after diagnosis. To the workplaces I’d moved through. To the colleagues who’d been managed out, burned out or quietly written off as “difficult.” In 2026 we still have fluorescent lighting, open plan offices and a baseline expectation of masking.

Corporate environments aren’t inclusive. They never were.

What I found wasn’t a knowledge gap, exactly. Most HR professionals and P&C leaders have heard of ADHD, autism, dyslexia. They know the terminology. What they don’t have is a clear line between what they know and what they’re legally required to do about it — or what it costs when they choose to do nothing.

On the other side: late-diagnosed adults are navigating workplaces that weren’t built for them and often without anyone in their corner who understood both the clinical and the organisational dimensions.

That gap is costing people. Real people. Real careers.

Awareness doesn’t address stigma.

With increased representation of autism in the media, I’ve observed bias toward the word neurodivergence. An automatic conclusion that neurodiversity equates to high needs autism. What I wish everyone knew, is research indicates 20 percent of the current population are neurodivergent. You can’t look at someone and aways see it. Often neurodivergent staff are the star employees that are operating at the verge of burn out.

Why I built something instead of just knowing things

I could have stayed in my lane. Kept doing operational work. Let this be a personal thing.

But I’ve spent most of my career doing analysis — identifying where systems fail, tracing problems back to their source, figuring out what needs to change before failure becomes a crisis.

The Neurodivergence Voice exists because workplaces are not going to become inclusive by accident. Someone must name what’s broken, trace it back to where accountability sits and build something that can facilitate authentic inclusion.

I built it because I had the lived experience, the diagnosis and the willingness to say things directly.

What this actually looks like

I target two tracks.

For organisations, it’s about getting honest on what inclusion requires: not awareness campaigns, not a single training day, but structural change that holds up under scrutiny. WHS obligations. Psychosocial safety. Reasonable adjustments that are genuinely reasonable.

For individuals — particularly late-diagnosed adults — it’s about having a thinking partner who has been inside the same maze and can help them work out what they need, what they’re entitled to, and how to ask for it without burning the place down.

Both tracks come from the same place: a refusal to treat neuroinclusion as a PR exercise.

A question for you

If you’ve read this far, I suspect you’re either working in this space, living it, or both.

So I want to ask: what was the moment — the conversation, the diagnosis, the realisation — that made the gap impossible to ignore for you?

I’d genuinely like to know. You can email me at cass@neurodivergencevoice.com

By Cass Nicholson

About Cass Nicholson

Cass Nicholson is the founder of The Neurodivergence Voice, a neuroinclusion consulting and coaching practice based in Brisbane, Australia. With nearly two decades of she brings an analyst’s eye to a space that has relied too heavily on goodwill over accountability. Late-diagnosed with ADHD, Cass works with organisations navigating their legal and cultural obligations, and with individuals finding their footing after a late diagnosis.