An employment tribunal case brought by several U105 presenters has been adjourned for conciliation.
The case against U105 Ltd had been scheduled to begin on Tuesday morning but it is understood the decision to postpone was taken on Monday.
No details of the reasons behind the dispute have been made public to date.
Those taking the joint action were listed as Elizabeth Cullen, John Patrick Cullen, David Anthony Johnston, Andrew (Jerry) Lang, Denise Scott (Watson), Carolyn Stewart and Stephen Woods.
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Better known to listeners across Northern Ireland as Johnny Hero, Mr Cullen presents the afternoon U105 Drive programme and previously spent 20 years on the airwaves with Downtown Radio.
Mr Lang hosts programmes on the weekends while Mr Johnson presents the Sunday Best show.
Ms Stewart hosts the lunchtime programme between Monday to Friday and Mr Woods hosts the Saturday Brunch show.
Based in the City Quays area of Belfast, the station was first launched in 2005 and in September was reported to enjoy around 280,000 weekly listeners according to Rajar figures.
The Northern Ireland Employment Tribunal and U105 have both been contacted for comment.
Another tribunal listed for this week is for the former chief fire officer Peter O’Reilly, who resigned in March last year after only six months in charge of the Northern Ireland Fire & Rescue Service.
It was previously reported that he had become frustrated by the slow progress in his efforts to modernise the service.
Originally from Co Antrim, Mr O’Reilly had been the chief fire officer in Greater Manchester at the time of the 2017 bombing at an Ariana Grande concert.