A former job centre employee upset her co-worker had ended their extra-marital affair is accused of illegally accessing his new mobile phone number in order to harass and threaten him

Brooke Holmes, who now runs F45 Training at Shellharbour, is accused of repeatedly ringing the man after he ended their 12-month relationship in 2014 and threatening to divulge their affair to her husband.

Former job centre worker Brooke Holmes. Credit:Facebook

Ms Holmes also allegedly phoned the man's new girlfriend, telling her they were still sleeping together and that he was the father of her unborn child.

Documents presented to Wollongong Local Court on Friday said Ms Holmes was working for ORS Group at the time in a role that gave her access to the restricted Employee Services System, which contained personal information including addresses and contact details for job seekers.