Speaking out at work is hard. It's even harder in a culture of silence. 

To take the decision to break the quiet is an act of bravery, ands it's one many of us are unwilling to risk. 

But the dangers of a culture of silence are many, and they impact employers and employees alike. 

While it can be a scary thing to do, research has found that people staying silent to protect their own heath and wellbeing almost always have worse results for their mental health in the long term in a silent workplace. 

Lisa speaks, loudly, with an expert on why people stay quiet. 

Guest: 

• Dr Nate Zettna: Lecturer in leadership at the Business School of The University of Sydney