A date has been set to hear a former chief of staff's unfair dismissal claim against Senator Jacqui Lambie.
In a Federal Court case management hearing on Friday, it was determined a split trial would be set to hear the claim from Rob Messenger and his wife Fern against Senator Lambie and the federal government.
Mr Messenger and his wife Fern were sacked from Senator Lambie's office in 2017 after they wrote to the Prime Minister about concerns of her alleged inappropriate workplace behaviour and a number of health and safety issues.
The pair have submitted that the dismissal was unlawful and the government had failed to provide them with a safe working environment.
It was determined through negotiation that the trial would be held over a week from September 21 and recommence for two weeks from October 19.
This was due to the parliamentary sitting schedule.
The Messengers have issued Senator Lambie with a number of notices to admit facts since the dispute started.
One relates to an alleged leak from the federal government to Senator Lambie about the workplace complaint.
Mr Messenger told Justice John Snaden on Friday he believed the complaint was relevant to the case as it led to adverse actions being taken against he and his wife.
But lawyers for Senator Lambie and the federal government argued the notice and others were outside the scope of their claim and would apply to have them struck out if they were not withdrawn.
Another pre-trial case management hearing is scheduled to be held on July 10.