Despite increasing measures to combat workplace harassment, bullies remain entrenched in organisations. Changes made to laws and regulations in order to stamp out bullying have instead transformed it into an underground set of behaviours. Now hidden, these behaviours often remain unaddressed.

In other cases, anti-bullying policies can actually work to support perpetrators. Where regulations specify what bullying is, some people will cleverly use those rules as a guide to work around. Although these people are no longer bullying in the narrow sense outlined by policies or regulations, their acts of shunning, scapegoating and ostracism have the same effect. Rules that explicitly define bullying create exemptions, or even permissions, for behaviours that do not meet the formal standard.

Because they are more difficult to notice or prove, these insidious behaviours can remain undetected for long periods. As Kipling Williams and Steve Nida argued in a 2011 research paper, “being excluded or ostracized is an invisible form of bullying that doesn’t leave bruises, and therefore we often underestimate its impact”.

The bruises, cuts and blows are less evident but the internal bleeding is real. This new, psychological violence can have severe, long-term effects. According to Williams, “Ostracism or exclusion may not leave external scars, but it can cause pain that often is deeper and lasts longer than a physical injury”.

Bullies tend to be very good at office politics and working upwards, and attack those they consider rivals through innuendo and social networks.

This is a costly issue for both individuals and organisations. No-one wins. Individuals can suffer symptoms akin to Post-Traumatic Stress Disorder. Organisations in which harassment occurs must endure lost time, absences, workers’ compensation claims, employee turnover, lack of productivity, the risk of costly and lengthy lawsuits, as well as a poor reputation.

So why does it continue?

First, bullies tend to be very good at office politics and working upwards, and attack those they consider rivals through innuendo and social networks. Bullies are often socially savvy, even charming. Because of this, they are able to strategically abuse co-workers while receiving positive work evaluations from managers.

In addition, anti-bullying policies aren’t the panacea they are sometimes painted to be. If they exist at all they are often ignored or ineffective. A 2014 report by corporate training company VitalSmarts showed that 96 percent of the 2283 people it surveyed had experienced workplace bullying. But only 7 percent knew someone who had used a workplace anti-bullying policy – the majority didn’t see it as an option. Plus, we now know some bullies use such policies as a base to craft new means of enacting their power – ones that aren’t yet defined as bullying behaviour by these policies.

Finally, cases often go unreported, undetected and unchallenged. This inaction rewards perpetrators and empowers them to continue behaving in the same way. This is confusing for the victim, who is stressed, unsure, and can feel isolated in the workplace. This undermines the confidence they need to report the bullying. Because of this, many opt for a less confrontational path – hoping it will go away in time. It usually doesn’t.

Cases often go unreported, undetected and unchallenged. This inaction rewards perpetrators and empowers them to continue behaving in the same way.

What can you do if a colleague is being shunned or ostracised by peers or managers? The first step is not to participate. However, most people are already likely to be aware of this. More relevant for most people is to not become complicit by remaining silent. As 2016 Australian of the Year David Morrison famously said, “The standard you walk by is the standard you accept.”

The onus is on you to take positive steps against harassment where you witness it. By doing nothing you allow psychological attacks to continue. In this way, silent witnesses bear partial responsibility for the consequences of bullying. Moreover, unless the toxic culture that enables bullying is undone, logic says you could be the next victim.

However, merely standing up to harassment isn’t likely to be a cure-all. Tackling workplace bullying is a shared responsibility. It takes regulators, managers and individuals in cooperation with law, policy and healthy organisational culture.

The onus is on you to take positive steps against harassment where you witness it. By doing nothing you allow psychological attacks to continue.

Organisational leaders in particular need to express public and ongoing support for clearly worded policies. In doing so, policies begin to shape and inform the culture of an organisation rather than serving as standalone documents. It is critical that managers understand the impacts of bullying on culture, employee wellbeing, and their own personal liability.

When regulation fails – the dilemma most frequently seen today – we need to depend on individual moral character. Herein lies the ethical challenge. ‘Character’ is an underappreciated ethical trait in many executive education programs, but the moral virtues that form a person’s character are the foundation of ethical leadership.

A return to character might diminish the need for articles like this. In the meantime, workplace bullying provides us all with the opportunity to practise courage.