Toxic workplace behaviour rarely arrives fully formed. It develops over time — through patterns of conduct that individually might seem minor but collectively create an environment where people are disengaged, unhappy, and eventually leaving. The challenge for employers is that the early signs are easy to overlook, particularly when the person displaying the behaviour is a high performer, a long-serving employee, or someone in a position of authority.
Recognising the warning signs early — and acting on them — is one of the most important things any employer can do to protect their culture, their people, and ultimately their business. Here are ten red flags that should never be ignored.
1. High Staff Turnover in a Specific Team
When turnover is concentrated in one team or under one manager, that pattern almost always tells you something. People generally leave managers, not companies. If a particular team is cycling through employees at a rate that stands out from the rest of the business, the cause is usually a management or cultural issue within that team — not just bad luck or a competitive labour market.
2. Complaints That Are Brushed Off or Never Resolved
CIPD research shows that only around a third of employees who experienced workplace conflict felt it was fully resolved. When employees see that raising concerns leads nowhere — or worse, leads to retaliation — they stop reporting. The complaints that surface represent a fraction of the actual issues. An organisation with few formal complaints is not necessarily a healthy one; it may be one where people have learned that speaking up is pointless.
3. A Culture of Blame
In a blame culture, mistakes are responded to with finger-pointing rather than problem-solving. People spend energy protecting themselves from criticism rather than focusing on doing good work. This creates a defensive, low-trust environment where people are unwilling to take initiative or flag problems — because doing so exposes them to blame.
4. Cliques and Exclusion
Informal social dynamics become toxic when they create in-groups and out-groups within the team. When certain employees are systematically excluded from conversations, social activities, or information-sharing that others have access to, this creates both a cultural problem and — where the excluded individuals share a protected characteristic — a potential Equality Act liability.
5. Managers Who Publicly Humiliate or Undermine
Criticism delivered privately and constructively is a management tool. Criticism delivered publicly, sarcastically, or in a way designed to undermine rather than improve is a form of workplace bullying — regardless of the manager’s seniority or the quality of their business results. This behaviour, left unchallenged, normalises humiliation as a management style and makes the entire team less psychologically safe.
6. Sudden Increases in Sickness Absence
Stress-related absence and mental health conditions account for more than half of all work-related ill health in the UK. A sudden or sustained increase in absence rates — particularly in a specific team — often reflects an underlying problem with the working environment. It should trigger an investigation into root causes, not just an absence management process focused on the individuals who are absent.
7. Presenteeism — People Working Through Illness
78% of UK senior leaders reported presenteeism — employees working while unwell — in their organisations in recent CIPD research. Presenteeism is damaging: it prolongs recovery, reduces productivity, and signals a culture where people do not feel safe taking sick leave. It is often worse in teams where absence is viewed negatively or where workloads are so high that being off feels untenable.
8. ‘Joking’ That Makes Others Uncomfortable
Banter that crosses into harassment — particularly where it targets someone’s race, gender, disability, age, sexual orientation, or another protected characteristic — is not a cultural quirk to be tolerated. It is unlawful under the Equality Act 2010, and employers who allow it to continue can be held vicariously liable. The classic defence that it was ‘just a joke’ is not a defence that stands up in tribunal.
9. Information Hoarding by Managers
When managers selectively withhold information from team members — keeping people in the dark about decisions that affect them, or using information as a form of control — it creates a power imbalance that erodes trust and autonomy. Teams function best when information flows freely and people feel they understand the context of their work. Systematic information hoarding is a form of psychological manipulation that, at its extreme, can constitute workplace bullying.
10. High Levels of Rumour and Gossip
Gossip is a natural part of human social behaviour, but when it becomes pervasive — particularly where rumours involve individuals’ personal situations, job security, or relationships with management — it signals a communication failure. People gossip most when they feel they are not being given accurate, timely information through official channels. The solution is better, more transparent communication — not simply telling people to stop gossiping.
What to Do When You Spot These Signs
Recognising these patterns is the first step. Acting on them — promptly, consistently, and with proper HR support — is what protects your business, your people, and your culture. Many of these issues can be addressed through a combination of management training, clearer communication, updated policies, and a more structured approach to employee relations.
Clearpath UK helps UK employers identify and address toxic workplace behaviour before it escalates into grievances, tribunal claims, or reputational damage. Contact us: sales@clearpathuk.co.uk | 020 3773 0992
