Bullying and harassment
Bullying and harassment at work, is "repeated unreasonable behaviour directed towards a worker or group of workers that can lead to physical or psychological harm" (Worksafe, 2018)
"Repeated" means the behaviour occurs more than once, but it does not mean that it has to be exactly the same behaviour each time, it just has to have the same targeted employee/s and the same harmful intention.
To help with clarity, bullying and harassment are not things like:
One off occasional instances ...