Interesting topic for a thesis.
I feel sorry for anyone who's got a narcissist for a boss. A brief list of traits:
# An exaggerated sense of one’s own abilities and achievements.
# A constant need for attention, affirmation, and praise.
# Persistent fantasies about attaining success and power.
# Exploiting other people for personal gain.
# A sense of entitlement and expectation of special treatment.
# A lack of empathy for others.
So if these behaviours are present and that CEO or whoever's in charge feels particularly secure in his/her position, then possible resulting behaviour could well be hubris ie., the puffing out of chest, the crossing of lines regarding office relationships (inc. behaviour that is of a sexually dominating or intimidating nature), the assuming of that CEO's supreme intelligence/authority - like the 'last word' that is closed to suggestions/imput from others.
I think it's a potentially dangerous mix: narcissism coupled with hubris, the no-one-can-touch-me attitude, for the CEO remains in a constant state of self interest and the tunnel vision of their own world view and self-grooming of the super ego. Habitually, then decisions made by this person will come in line with the continual self-elevations - to keep the 'feeling' happening, hubris being a feeling of wellbeing - like a drug?.
I think that the more someone ends up and stays like this, the more obvious the behaviour will be to those that work for/with this person And those that feel any intimidation to this CEO, well, their behaviour is likely to be modified, however subtley, around this person as 'feeders' to this boss's ego needs. And this especially if the boss's needs are not met and that boss becomes in any way aggressive if that need for stroking is lacking (ie., to maintain the feeling of hubris).