Best Practice Guidelines from MBIE and WorkSafe NZ - Workplace Bullying (Hazard)
Advice for employers on how to handle the significant hazard of workplace bullying ...
.... - the guidelines have a focus on employers and employees responding before a situation has a chance to get out of hand. Well worth a read.
http://www.business.govt.nz/worksafe/tools-resources/bullying-prevention-tools
http://www.business.govt.nz/worksafe/tools-resources/bullying-prevention-tools