Toxic bosses do not just cause stress - they make employees feel less human

Bad management causes stress. That much is obvious and well-documented. But new research from Portland State University suggests the damage runs deeper than mood or morale. Abusive supervision does not merely frustrate employees. It changes how they see themselves as human beings within the organization.

The study, published in the Journal of Occupational Health Psychology and co-led by Liu-Qin Yang, a professor of psychology at PSU, identifies organizational dehumanization as the primary mechanism through which toxic leadership destroys both individual well-being and workplace collaboration.

Two pathways of destruction

The research team conducted two studies - a dyad study pairing supervisors and subordinates in China, and a longitudinal study tracking employees over time in North America. They tracked how specific supervisor behaviors, such as public ridicule, invasion of privacy, and belittling comments, affected employees' sense of agency and humanity.

When employees felt dehumanized - treated as tools or interchangeable parts rather than as people with autonomy and worth - the damage flowed through two distinct channels:

The internal toll: Dehumanized employees experienced a pervasive sense of inauthenticity. Unable to be their true selves at work, they engaged in constant self-suppression. That emotional labor led directly to exhaustion and severe burnout.

The social toll: Employees who felt stripped of agency also felt powerless to influence their environment. Believing they had no meaningful impact, they became significantly less likely to engage in voluntary helping behaviors - the informal teamwork, mentoring, and mutual support that organizations depend on but rarely measure.

The self-efficacy buffer

Not everyone was equally affected. The study identified chronic self-efficacy - a persistent belief in one's own ability to overcome challenges - as a protective factor. Employees with high self-efficacy were less susceptible to the dehumanizing effects of abusive supervision. Their internal sense of capability provided a buffer, allowing them to maintain performance and sense of self even under poor leadership.

This finding has practical implications. Organizations cannot always prevent individual managers from behaving badly, at least not immediately. But they can invest in building employees' self-efficacy through training, mentoring, and empowerment - creating psychological resilience that partially insulates the workforce while structural problems are addressed.

Why standard fairness initiatives fall short

The researchers argue that typical organizational responses to workplace toxicity - fairness training, grievance procedures, anonymous surveys - do not address the core problem identified in this study. Those initiatives assume the damage is about perceived unfairness. The data suggest the damage is about perceived dehumanization, which operates at a more fundamental level.

An employee who is treated unfairly but still feels valued as a person will respond differently from one who feels reduced to a function. The latter experience attacks identity itself, not just satisfaction.

Limitations of the research

Cross-cultural studies are valuable for generalizability but introduce complexity. Workplace norms around hierarchy, authority, and self-expression differ between China and North America, which could mean the two pathways operate with different intensity in different cultural contexts. The study does not fully disentangle these effects.

The dyad study captures a snapshot; the longitudinal study tracks change over time but cannot establish causation with certainty. Employees who already have lower self-efficacy might both perceive more abuse and report more dehumanization, creating a correlation that looks causal but is not.

Sample sizes were adequate for the statistical methods used but not enormous. And the study focused on direct supervisor behavior, not on organizational culture more broadly - though the two are obviously related.

Yang recommends that organizations adopt management development programs emphasizing respectful communication and human-centric leadership, and invest proactively in building employee self-efficacy rather than waiting for damage to manifest in turnover statistics and burnout claims.