She said he had been involved in a number of "feuds" with various people - including clients and the other managers, including one who was meant to be working on Monday night but had not turned up for his shift.
"Every manager had found him annoying or had an argument at one point," she said of the dead man.
"Maybe over girls, someone's not doing something right or someone's slacking off."
The murder victim - whose role as a manager included looking after women working on any given day or night - had also reportedly made clients angry in the past.
"Usually the client was in the wrong. Let's just say disrespects a girl or stays too long - [He's] like: 'F*** off'. The client would get angry," she said.
POLICE URGE ANYONE WHO VISITED THE PARLOUR TO COME FORWARD
Police officers investigating the homicide are also appealing to anyone who visited the parlour on Monday and early Tuesday morning to contact authorities.
The public appeal comes as the investigation - now dubbed Operation Anniston - enters its second day after the victim's body was found by a member of the public in the early hours of Tuesday, just after midnight.
Emergency services were called to the house later identified as Club 574, one of Auckland's oldest brothels, on Manukau Rd in Epsom.
"We ask anyone who was at the premises to contact the investigation team with urgency," acting Detective Inspector Glenn Baldwin said.