"Toxic workplace culture" has become shorthand for almost any difficult work environment. Used loosely, it risks losing meaning. Used precisely, it describes something specific: a culture in which harmful behaviours are normalised, structural conditions consistently produce harm, and the organisation's response, or non-response, signals to everyone watching that the harm will be tolerated.
Toxicity is not a personality problem. It is not caused by a single bad actor, although bad actors can accelerate it. It is an organisational condition, produced by decisions about how work is designed, how leaders are selected and developed, how performance is rewarded, and how harm is responded to when it occurs.
Understanding it that way is the only basis on which it can be effectively addressed.
What Toxic Cultures Actually Look Like
The most visible markers of a toxic workplace culture are interpersonal: bullying, harassment, exclusion, intimidation, the normalisation of disrespectful conduct. These are real and they matter. But they are symptoms, not causes. Organisations that focus exclusively on managing individual behaviour while leaving the conditions that produced it intact will find the same patterns recurring: under different names, in different teams, with different people.
Less visible, and often more corrosive, are the structural and cultural dynamics that sit underneath the interpersonal ones.
Silence is rewarded and speaking up is punished. In toxic cultures, the unwritten rule is that raising concerns about conduct, about workload, about decisions, carries risk. People who speak up find themselves managed out, sidelined, or subjected to retaliation that is plausibly deniable. The chilling effect on everyone else is immediate and lasting. When an organisation responds to a complaint by scrutinising the complainant's own conduct, or by managing them out shortly after they raise a concern, the message to the workforce is clear, regardless of whether the outcome was intended.
Performance metrics override people metrics. Toxic cultures frequently develop in high-performance environments where results are rewarded and the means of achieving them are not scrutinised. Managers who deliver numbers but create harm in their teams are retained, promoted, and implicitly endorsed. Their direct reports learn that the organisation's stated values are decorative. The people most damaged by this dynamic, those who internalise the dissonance between what the organisation says and what it tolerates, are often the highest performers and the most values-aligned employees. They leave first.
In-groups and out-groups are structurally reinforced. Toxic cultures tend to have identifiable groups who receive preferential treatment, in access to information, to opportunity, to informal sponsorship, and those who do not. This dynamic frequently maps onto demographic lines, but not exclusively. It can also track proximity to powerful leaders, tenure, or function. Those outside the in-group experience a consistent, low-level erosion of belonging that rarely rises to the level of a formal complaint but accumulates into significant harm and disengagement over time.
Accountability is selective. Rules are enforced for some and not for others. Conduct that would result in dismissal for a junior employee is managed with a private conversation for a senior one. Investigations into serious allegations are conducted slowly, or quietly shelved. The result is a workforce that has learned, accurately, that consequences are a function of seniority and relationship, not of conduct. That understanding is itself a form of harm.
Change is perpetually announced and never embedded. Many toxic cultures have extensive documentation of values, commitments, and cultural aspirations. They may have run multiple culture programs over several years. The toxicity persists because the programs address the surface while the structural conditions, including the incentive systems, the leadership behaviours, and the accountability mechanisms, remain unchanged. Employees in these organisations have developed a sophisticated scepticism about culture initiatives, and they are right to have it.
What Drives Toxic Cultures
Identifying the characteristics of toxicity is useful. Understanding what produces and sustains it is more important.
Leadership behaviour that is modelled but not scrutinised. Culture is transmitted primarily through what leaders do, not what organisations say. Where senior leaders display aggression, exclusion, or disrespect, and are not held accountable for it, that behaviour becomes the ambient standard. Junior managers, observing what is tolerated at the top, calibrate their own behaviour accordingly. The tone set by senior leadership is not just aspirational: it is the operating instruction.
Promotion systems that reward results without regard to conduct. When the pathway to advancement runs through performance metrics and relationships with powerful people, rather than through demonstrated values-aligned behaviour, the leaders who rise are disproportionately those who are comfortable with aggression, self-promotion, and boundary-pushing. Over time, this selection effect shapes the entire leadership cohort. By the time an organisation recognises the pattern, the leaders who created it are often also the ones responsible for addressing it.
Role ambiguity and resource scarcity. Unclear responsibilities, inadequate resourcing, and unmanageable workloads create the conditions in which interpersonal conflict, blame-shifting, and competitive aggression thrive. People under sustained pressure and without the structural support to manage their work effectively tend to find someone to hold responsible for it. Role ambiguity following mergers, restructures, or rapid growth is a consistent precursor to the interpersonal dynamics that define toxic cultures.
A complaint and investigation system that deters rather than supports disclosure. Where employees have observed, or experienced directly, that raising concerns leads to worse outcomes than staying silent, they stop raising concerns. The organisation loses its early warning system entirely. Problems that could have been addressed when they were small become entrenched. By the time a formal complaint is made or a regulator becomes involved, the harm has often been accumulating for years.
Inadequate or absent consequences for harmful conduct. The message an organisation sends when it fails to act proportionately on harmful behaviour is not just about the individual case. It is a public signal to every employee about where the real boundaries are. In toxic cultures, the formal policies say one thing and the lived reality says another. Employees read the lived reality, and they behave accordingly.
What Addressing Toxic Culture Actually Requires
Start with honest diagnosis, not aspirational programs. The most common mistake organisations make when confronted with evidence of cultural toxicity is to respond with a values refresh, a new training program, or a town hall about respect. These interventions are not wrong in themselves, but deployed without a clear-eyed diagnosis of the structural conditions producing the culture, they communicate to employees that the organisation is more interested in managing appearances than changing conditions. Effective diagnosis requires listening: systematically, safely, and with a genuine commitment to acting on what is heard. It requires disaggregating experience by demographic group, by level, and by team, because cultural harm is rarely experienced uniformly. And it requires the willingness to surface findings that are uncomfortable for senior leaders, which means those findings need to be gathered independently of those leaders.
Attend to leadership conduct as a primary driver. If the leadership cohort is producing or tolerating toxic behaviour, no amount of frontline training will shift the culture. Addressing leadership conduct requires clarity about what behaviours are unacceptable, defined specifically enough to be actionable and not just in aspirational terms, and consequences that apply regardless of seniority or performance. This is where most organisations falter. It is one thing to hold a junior employee accountable for disrespectful conduct. It is another to apply the same standard to a high-performing senior leader. Organisations that cannot do the latter are sending a precise message to their workforce about where the actual limits are.
Redesign the structural conditions, not just the behaviours. Where toxicity is driven by role ambiguity, resource scarcity, or performance systems that reward results without scrutiny of conduct, those structural conditions need to be addressed directly. This means examining how roles are defined and resourced, how workloads are distributed, how managers are selected and developed, and how performance is assessed. It also means examining what the promotion system actually rewards in practice, not in the competency framework, but in the decisions that get made about who advances.
Build a complaints and reporting system that people actually trust. Employees will only use reporting systems they believe are safe and effective. Rebuilding trust in these systems, where it has been damaged, requires demonstrable change: visible consequences for harmful conduct, visible support for those who raise concerns, and visible follow-through on what the investigation process commits to. This cannot be communicated through policy. It can only be demonstrated through decisions made in real cases, which are observed by the entire workforce.
Build and sustain senior accountability. Cultural change that is not owned at the senior level does not hold. This means making cultural health outcomes, including psychological safety scores, turnover patterns, complaint trends, and inclusion indicators, visible at board and executive level, and connecting them to how senior leaders are assessed. It means the CEO and board asking the same questions about cultural risk that they ask about financial and legal risk. And it means being willing to act on the answers, including when those answers point to people with significant organisational power.
Summing Up
Toxic workplace cultures are not mysterious. They have identifiable drivers, identifiable patterns, and identifiable points of intervention. What they require, and what most organisations find difficult, is the willingness to look honestly at the structural conditions producing the culture, rather than the individual behaviours it produces.
A values statement will not change a toxic culture. A training program will not change it. A town hall will not change it.
What will change it is the same thing that created it: decisions: about who is promoted, what is tolerated, how harm is responded to, and what leaders are held accountable for.
Felicity Menzies is the CEO and Principal Consultant of Culture Plus Consulting, a specialist practice focused on building respectful, safe, and inclusive workplace cultures across corporate and government organisations in Australia. Culture Plus Consulting provides workplace culture diagnostics and tailored interventions to help organisations understand and address the conditions driving harm, disengagement, and cultural risk.