I recently resigned (29 June 2020) without notice due to problems with a line manager (in Perth), a known bully who has been the cause of many acrimonious departures. I had been discussing my reasons for leaving with the local State Manager, who agrees this person is a problem, but no-one had been able to do anything about it. I finally handed the State Manager written notice, apologized and left. I have now been sent a separation certificate by Perth Admin manager that states the separation was due to misconduct. There was no misconduct. I was a high performer with excellent performance reviews etc. I was also only a part-time admin worker so easy enough to replace in current market. I have written asking for an amended certificate but received no reply. The FW Ombudsman's Office advised this certificate goes to the ATO and Centrelink. Do I have any legal ground for having this certificate changed? I will also not be eligible for $10k of retained bonuses as contract had a clause that not payable for a 'bad leaver' which I am guessing is part of the reason for marking as misconduct . While I have great references, my concern is that a background check of this employer could reveal this false claim of misconduct. Is there anything I can do?