Seven West Media has launched contempt proceedings against Amber Harrison, the former lover of the broadcaster's CEO, Tim Worner.
Ms Harrison has been at the centre of a long-running dispute with the media company after she revealed details of the affair with Mr Worner and a subsequent settlement agreement last December.
It is understood Seven began contempt proceedings against Ms Harrison in court on Tuesday, alleging a number of contempt breaches by the former network executive assistant over the past four months.
In June, Ms Harrison was ordered to pay all of Seven's legal costs after a NSW Supreme Court judge found she made allegations she could not substantiate and acted unreasonably in her battle with the broadcaster.
The broadcaster secured a permanent gag order to stop Ms Harrison from leaking company details and previously argued her social media posts had breached her employment contract.
It is understood the contempt proceedings relate to Ms Harrison's social media comments and comments made in television and radio interviews.
The contempt matter is listed for a directions hearing on December 18.