In a workplace context, “harassment” is unwanted conduct related to a protected characteristic under the Equality Act 2010 (other than marriage and civil partnership, and pregnancy and maternity) that has the purpose of violating a person's dignity or creating an intimidating, hostile, degrading, humiliating or offensive environment for that person. Harassment in the workplace can also occur where a person reasonably considers conduct to have that effect, even if the effect is unintended.
“Bullying” is not defined in UK employment law. Acas defines workplace bullying as “offensive, intimidating, malicious or insulting behaviour, an abuse or misuse of power through means that undermine, humiliate, denigrate or injure the person being bullied”. The Health and Safety Executive stresses that bullying is a pattern of behaviour rather than isolated instances, and states that it “involves negative behaviour being targeted at an individual, or individuals, repeatedly and persistently over time”.