Recently two of my co-workers informed me that a Manager and Human Resources (HR) professional at work independently called each of them in for a meeting and proceeded to question them about my relationship status and, in particular, if I was having an affair with a co-worker. I am concerned that this Manager used her position as both the direct Manager of the two co-workers interviewed and a HR professional to defame myself and my co-accused and to collect personal information that my employer is not legally allowed to ask me. My co-accused and I were not having an affair and do not work in any proximity to each other in which a relationship would have affected our employer (i.e. a power relationship). We work independently in different departments and have little contact in the workplace. I am confused as to whether this action constitutes discrimination, a breach of privacy, defamation or some other legal issue and where best to direct the complaint? I am in Queensland.