You've probably heard the term. It's been circulating in HR conversations and leadership circles for a few years now, and for good reason. But "psychological safety" is one of those phrases that can lose its meaning when it's repeated often enough, nodded to in strategy documents, and then quietly forgotten.
So let's be clear about what it actually is.
The basics
Psychological safety, a concept developed and popularised by Harvard Business School professor Amy Edmondson, is simply this: the belief that you won't be punished or humiliated for speaking up — whether that's raising a concern, admitting a mistake, asking a question, or offering a different point of view.
That's it. There's no complexity in the definition. The complexity, of course, is in creating it.
Because while most leaders would say they want their teams to feel safe to speak up, the reality in many workplaces looks quite different. People stay quiet in meetings unless they're certain they're right. Problems get hidden rather than raised. Mistakes get covered up rather than learned from. New ideas are shut down early and often, and after a while, people stop offering them.
None of this is usually intentional. But it has real consequences.
Why it matters more than you might think
In the mid-2010s, Google conducted what became one of the most widely cited pieces of workplace research in recent years. Project Aristotle studied more than 180 teams to identify what made some significantly more effective than others. They looked at everything: individual performance, seniority, personality types, and how often people socialised outside work.
And the answer wasn't who was on the team. It was how the team felt about speaking up. Psychological safety was the single most important factor in team effectiveness, consistently outranking everything else.
So the implications for businesses are significant. Teams where people feel psychologically safe are more likely to flag problems early, share ideas that lead to genuine innovation, support each other through difficulty, and, most importantly, stay. Staff turnover is expensive, and people who feel safe in their team are considerably less likely to leave. In short, psychological safety drives innovation, collaboration, and retention.
There's also a legal dimension worth being aware of. The Health and Safety Executive's guidance on work-related stress and psychosocial risk factors includes how employees are treated, the support available to them, and whether they feel able to raise concerns. Psychological safety isn't just a "nice to have". For many organisations, it sits squarely within their duty of care.
So how do you know if your team has it?
This is where many organisations get stuck. Psychological safety is largely invisible until it's absent, and by the time the absence becomes obvious, things have usually been difficult for a while. Being proactive and looking for early signals is crucial.
Here are a few signals worth paying attention to…
- People only speak when they're certain of the answer. If your meetings are dominated by the same handful of voices, and others only contribute when they know they're "right," that's worth noticing.
- Mistakes stay hidden. In teams with low psychological safety, people conceal errors rather than surface them. This doesn't just create operational risk; it prevents learning.
- Agreement in the room, dissent in the corridor. If your team says yes in meetings and raises concerns afterwards with colleagues, not with you, that's a significant gap between the culture you think you have and the one that actually exists.
- High performers leave unexpectedly. When strong team members start exiting without obvious warning signs, it often means the environment has quietly deteriorated.
How to actually find out
Observation is a starting point, but it has limits, particularly if people are already guarded. A few more reliable approaches:
Anonymous pulse surveys
Amy Edmondson developed a short, research-backed scale specifically designed to assess psychological safety in teams. Using an anonymous format is essential here; you won't get honest answers if responses can be traced back to individuals. Questions typically explore whether people feel able to raise problems, take risks, and ask for help without fear of judgment.
Watch who speaks and who doesn't
In your next team meeting, notice the pattern of contributions. Is it always the same people? Are certain voices consistently absent? Do more junior team members ever offer challenge or critique?
Exit interviews
If you're not currently running exit interviews, start. If you are, look specifically for themes around feeling heard, feeling safe to raise concerns, and whether concerns raised were acted on. Here are 3 example questions you might want to include:
- “Were you comfortable raising concerns or alternative views? If not, what made it difficult?"
- "When you did raise issues or share ideas, did you feel they were taken seriously and acted on?"
- "Did you feel your manager and team were genuinely open to hearing bad news or different points of view?"
Just a side note: if the answers reveal bullying, harassment, discrimination, or a whistleblowing disclosure, do not treat the comments as ordinary feedback; they should be carefully recorded and routed to the relevant grievance or whistleblowing process.
One-to-ones with the right questions
A direct question like "Is there anything you've wanted to raise that you haven't felt able to?" can be genuinely revealing, though its value depends heavily on the existing level of trust between manager and team member.
Act on what you find
This is perhaps the most important point of all. Nothing undermines psychological safety faster than people raising concerns that go unacknowledged or unaddressed. If you ask the questions, you have to be prepared to do something with the answers.
A starting point for change
Building psychological safety is gradual work. It starts with the behaviour of leaders. You should be willing to say "I don't know," acknowledging when something went wrong, and responding to bad news without making it the messenger's problem.
It's also, at a practical level, about the small everyday moments. Recognising a colleague's effort. Making time to listen. Asking how someone is and actually waiting for the answer.
Those moments matter more than most formal initiatives. They're what make a team feel safe or not.
Ready to build a more psychologically safe workplace?
If this has sparked a conversation about where your organisation stands, here's how MHIB can help.
Our free Kindness Ripple Challenge is a practical starting point — a simple, team-friendly resource built around the small everyday actions that quietly shift workplace culture. If you haven't downloaded it yet, you can grab it here.
For a deeper look at psychological safety specifically, our brand-new 2026 webinar, Psychological Safety: Creating Spaces for Trust and Innovation, explores how to recognise barriers, build trust-based communication, and create teams where people genuinely feel safe to speak up. Delivered online, it's an accessible, evidence-based session for your whole organisation.
For managers and leaders wanting to go further, our workshops offer a more hands-on, small-group experience that’s practical and interactive, with real outputs to take straight back into the workplace.
Get in touch at info@mhib.co.uk or visit mhib.co.uk to find out more.
