Based on the Workplace Bullying Institute, workplace bullying is repeated, health-harming mistreatment of a number of persons (the targets) by a number of perpetrators that can take a number of the next forms:
Offensive conduct/behaviors (including non-verbal) that are threatening, humiliating, or intimidating
Work interference – sabotage – which prevents work from getting done.
One isolated incident doesn’t constitute workplace bullying. Bullying behavior is usually:
persistent and prolonged anyway