There was one team meeting that I attended where they were all laughing in the first two minutes. Birthday cake in break room, inside jokes exchanged, a manager who really liked his employees. This on paper was a ‘happy' team. When a junior team member saw a high dollar mistake in a client deliverable, though, she didn't say anything. In a session she told me later, that she didn't want to "kill the vibe. No one ever corrected her for voicing their opinion. She simply did not know it would be OK to.
That one moment has something to teach me that I think a lot of workplaces miss - seeking to be happy and believing that you'll be safe. It is NOT like that. I've been sitting with people for years as a psychologist, talking about work not just their work, so I've come to realize that psychological safety and employee happiness are two different concepts, but they're two concepts that are related. It's a costly mistake that organizations make and it's a loss of voice for individual employees.
Most businesses refer to happiness when they're talking about something akin to mood. Are people smiling? Are they receptive to the employees? Like to eat the free lunches, take wellness Fridays, enjoy the office plants? In this context, happiness is more of an emotional condition: it is good, discernible, and to be sure, measurable by a smiley face questionnaire.
It's great to make people feel good in the workplace. Happiness of this sort is more akin to the view of wellbeing that psychologists would refer to as the “hedonic” side, where it is a moment-to-moment, feel-good experience of pleasure or satisfaction. It's very fragile as well as very real. It can be made with a taco truck and a good all hands meeting for a quarter and it can disappear the instant that a reorg is announced.
Gallup's latest workplace information is a quint example of this. However, employee wellbeing, their perception of being “thriving” actually improved slightly in 2025 to be around a third of the workforce. However, during the same timeframe, true Accountability at Work continued to decline and was among the lowest it's been since 2003 with a significant portion of participants reporting high levels of workplace stress on a daily basis. That is, individuals can feel good about their overall lives without experiencing a sense of validation, a sense of being heard or feeling safe to voice their true opinion at work. The path to happiness and engagement do not necessarily go hand-in-hand as we might think.
Psychological safety is quite another thing. Amy Edmondson, a Harvard Business School researcher, developed the term based on her research of hospital teams in the late-1990s, and her discovery was just the opposite of what you might think. The teams that did more errors did not necessarily indicate the worst teams, the best teams did. What made the difference was that they didn't have fewer errors, they were able to share their errors. Not lower performing teams were making fewer errors. They only kept their mouths shut about them.
Edmondson saw psychological safety as a team's shared assumption that it's safe to take interpersonal risks; ask a question that may seem foolish, acknowledge that you’re running behind on a project or meeting, counter your manager's ideas in a meeting, or point out a problem before it becomes an emergency. It's not about whether or not people like one another. It's whether they believe that speaking up will come with personal and/or social or professional consequences.
To test this, Google did its famous Project Aristotle study, looking at more than 180 teams within Google for two years to understand why teams succeed. There was no greater factor than psychological safety in the team composition, individual talent or resources. By far the best indicator of the success of a team.
The bit that counts for this article is that it's not comfort, it's not positivity. It's not comfort, it's not positivity, this is the part that matters for this article. Real and sometimes uncomfortable differences of opinion can take place within a psychologically safe team. Individuals question ideas of others. An employee raises a concern about the plan that the boss is enthusiastic about. Not all "happy" moments are in the traditional sense of the word - but it's a healthy one.
I believe it is the confusion over the two ideas, both of which sound soft, both of which fall under the category of "culture". When they're treated as interchangeable, however, there are two failure patterns I see, over and over in my work with organizations and individual clients.
The happy-but-unsafe workplace. This is the team that I'm talking about from my first story. People are all getting along, it's a happy day, but it's not a day for rocking the boat. The avoidance of conflict is confused with harmony. Staff are taught to not share concerns as this may be considered negative, challenging or "not a team player. This is sometimes called “toxic positivity” and is an environment where there is not enough friction and healing because there are only positive vibes. The automobile example is one that frequently crops up in psychological safety research: When an engineer in a team discovers a design problem during testing but fails to speak up because he or she is afraid that he or she will be perceived as the "problem child. Several months later, the defect rears its ugly head, and at a much more expensive price. In that story no one was displeased. There was someone who wasn't safe.
On the other hand, a team that is working hard and honestly giving honest, direct feedback to one another, bringing up uncomfortable information, holding one another accountable, doesn't always look very happy in the traditional sense. It's possible to have a conflict. It is OK for the room to disagree. There is trust in the relationship, however, that it won't punish either one of the players for holding that tension. This is a team that is psychologically safe even when it's not very happy.
If they only measure happiness, they will all miss the second pattern, and the first completely. A happiness survey might be looking good until the time of the resignation, when a major error is found, or when an employee utters a one-year-pound in the end.
Psychologically, the methods of intervention for safety and happiness differ. Giving stuff, complimenting them, and organising social events can make them happier, it helps them to feel better, but it has little impact on trust. To ensure building safety, a slower response and more structural were needed.
But there are three habits that are more significant than any one policy, according to Edmondson's own research. Leaders should be straightforward in their approach to the work and be clear about the risks and uncertainties that exist, instead of suggesting there is nothing to fear. They must really invite them to contribute, rather than put up with a few words every so often. They also need to take some action in response to the individual who spoke up – something that is productive, rather than simply a "thank you for your bravery.” Most importantly, they need to take some action in response to the one that spoke up, not just a "thank you for your bravery," but some tangible response. Leave out the final one, and people quickly get the message that voicing their objection doesn't make any difference - not even in nice cultures.
One last item from the therapy room: Safety is created, it is not enhanced through intensity. It's not something that can be created by one inspiring speech. What makes it is the fifth time that somebody raises a concern, NOT the first. Do they receive the same kind of treatment they are given despite its not being convenient? It is this repetition that it is supposed to believe is safe and that it is OK to relax and be honest, not that it says it is OK to relax and be honest.
Psychological safety and happiness can go together and in the ideal workplace, they often do. But they're not exactly the same and one doesn't equate with the other. During a meeting a team can be smiling and have issues they are not willing to identify. Perhaps it wasn't exactly a happy meeting, but another team can leave it feeling tougher, better, and more connected to one another and more respected.
If you are developing a team or you are part of a team, you might want to ask those two questions separately: Do people like working in their teams? and more important: Do they feel free to tell you the truth? Those are two different factors of a healthy workplace and one of them is present in the free food.
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