[10] According to Penney and Spector, narcissism is positively related to counterproductive workplace behaviors, such as interpersonal aggression, sabotaging the work of others, finding excuses to waste other peoples' time and resources, and spreading rumors.
[14] In 2007, researchers Catherine Mattice and Brian Spitzberg at San Diego State University, USA, found that narcissism revealed a positive relationship with bullying.
Narcissists were found to prefer indirect bullying tactics (such as withholding information that affects others' performance, ignoring others, spreading gossip, constantly reminding others of mistakes, ordering others to do work below their competence level, and excessively monitoring others' work) rather than direct tactics (such as making threats, shouting, persistently criticizing, or making false allegations).
The research done supported the idea that employees mental health and stability was negatively affected by bullying (some narcissistic behavior) in the workplace.
In terms of the internal functioning of organizations, narcissists can be especially damaging, or ill-fit, to jobs that require judicious self assessment, heavily rely on teams, and/or use 360 degree feedback.
[23] Neville Symington has suggested that one of the ways of differentiating a good-enough organisation from one that is pathological is through its ability to exclude narcissistic characters from key posts.
[25] Teammates may find everyday offers of support swiftly turn them into enabling sources of permanent supply, unless they are very careful to maintain proper boundaries.