Kyle and Jackie O hit with multimillion‑dollar countersuit

Kyle Sandilands and Jackie “O” Henderson now face legal fire from both directions, with former employer ARN Media launching sweeping claims against the pair over alleged lost advertising revenue, legal costs and the partial return of multimillion‑dollar signing bonuses.

The move escalates an already bitter legal saga that began when the star duo sued ARN for tens of millions of dollars each following the spectacular collapse of their reported $200 million, 10‑year KIIS FM breakfast deal.

Sandilands and Henderson commenced separate Federal Court actions in March, each seeking more than $80 million in damages after their contracts with KIIS were torn up in the wake of an on‑air bust‑up earlier this year.

Henderson alleges her termination amounted to unlawful adverse action after she told executives she could no longer work with Sandilands. He is claiming around $85 million, arguing his dismissal was invalid because there was no serious misconduct or breach of contract and that his on‑air persona was exactly the “abrasive” and “robust” character the network wanted.

ARN has consistently rejected those claims. Now, in newly filed defences and counterclaims, the network is going on the offensive.

Court documents reveal ARN and its subsidiaries are seeking to recover what they say are substantial losses tied to the abrupt end of The Kyle & Jackie O Show’s tenure on KIIS.

The broadcaster alleges:

• The presenters’ conduct caused measurable financial damage in the form of lost advertising revenue and profits once the flagship breakfast show went off air

• Both Sandilands and Henderson – via their companies Quasar Media and Henderson Media – are liable for “incurred expenses, losses, liabilities, damages or costs” said to flow from alleged breaches of their services agreements

• The losses, while not yet fully quantified, are estimated to run into the millions

In addition, ARN is attempting to claw back a large portion of the signing money it paid to secure Sandilands.

A clause in the services agreement with Quasar Media, Sandilands’ corporate vehicle, is said to entitle ARN to recover 87.92% of a $3 million signing bonus, amounting to just over $2.63 million. The upfront payment has been characterised by entertainment commentators as effectively a “thank you note” for agreeing to the decade‑long deal, with a similar arrangement understood to have been in place for Henderson.

ARN is also pursuing recovery of its legal costs related to what it describes as the fallout from the contractual dispute.

The broadcaster’s defence leans heavily on a series of incidents it says justified ending Sandilands’ contract and underpin its attempt to recoup losses.

Among the examples cited are:

• Attacks on executives: In a 2025 broadcast, Sandilands allegedly derided then‑COO and now chief executive Michael Stephenson in highly colourful terms, dismissing his authority and predicting he would soon be out of a job. Stephenson ultimately led the decision to remove Sandilands from the network.

• Threatening language towards activists: ARN points to comments Sandilands made about the activist group Mad F***ing Witches, in which he suggested he could “get nasty behind the scenes” and made inflammatory remarks about burning houses and the group’s campaign against the show’s advertisers.

• Conduct towards Henderson: The network relies on a trail of incidents culminating in their explosive February 2026 on‑air confrontation. In that segment, Sandilands criticised Henderson’s focus and her interest in astrology, accusing her of being “off with the fairies” and “unfocused”, prompting her to tell him to “get somebody else” and leave the show in tears.

Behind the scenes, the documents paint a picture of long‑running strain. In one off‑air exchange, captured on video according to court filings, Sandilands is alleged to have told Henderson not to return until she had her “s*** together” and claimed he had been “carrying the whole show”.

Following the February blow‑up, Henderson’s solicitors sent a detailed complaint letter to ARN and its subsidiary Commonwealth Broadcasting Corporation (CBC), accusing the company of failing to address what they described as “persistent and relentless bullying” by Sandilands and flagging potential defamation action. The letter claims Henderson was left psychologically unwell, defamed and humiliated by repeated on‑air attacks.

Who was responsible for stopping the bullying?

A key fault line emerging in the litigation is responsibility for what went to air – and for the safety of those behind the microphone.

In its defence to Henderson’s claim, CBC argues that:

• It contracted with Henderson’s company, Henderson Media, and with Sandilands’ Quasar Media to provide the Kyle & Jackie O Show as independent program providers.

• Those companies, not ARN or CBC, were “solely responsible for controlling the manner” in which the show was delivered.

• Once the program was live, CBC had “no ability or power” to immediately prevent Sandilands from engaging in bullying or other unwanted conduct towards Henderson.

CBC further points to the terms of Henderson’s reported $9.4 million‑a‑year deal, under which, it says, Henderson Media was contractually responsible for ensuring her health and safety while providing the program services.

That position cuts directly across Henderson’s allegations that ARN and CBC failed in their duty of care by not adequately responding to her complaints. Her legal team argues that the company had multiple opportunities – and a legal and ethical obligation – to step in long before the final on‑air implosion.

The documents also reveal a contested timeline around how the network reacted to Henderson’s concerns.

After a heated off‑air clash in September last year, ARN’s then‑chief content officer wrote to Henderson’s manager describing the issue as “serious” and emphasising that Henderson’s wellbeing was a priority, seeking further details to investigate. Her manager later indicated the matter was “resolved”, a point media lawyers say may make it harder for Henderson to argue the company failed to act.

Following the February 2026 confrontation, however, Henderson’s lawyers accused ARN of allowing a pattern of conduct to continue unchecked. They allege she had been bullied on live prime‑time radio over an extended period, and that the group “failed to adequately address” the behaviour.

ARN, for its part, says it took steps to rein in Sandilands, including increasing the number of censors on the show, issuing directions not to discuss certain sensitive topics on air, and imposing boundaries around commentary on executives, regulators and ongoing legal issues.

Contracts collapsed after Henderson refused to return

The Kyle & Jackie O Show’s long‑running partnership effectively collapsed once Henderson made clear to ARN executives that she could no longer work with Sandilands following the February clash.

According to the network’s account, Henderson told ARN she could not continue in her role if paired with Sandilands.The company concluded it could not employ her under her existing contract on that basis and terminated her agreement. It then scrapped Sandilands’ deal shortly afterwards.

Henderson is seeking at least $82 million in damages, while Sandilands wants immediate reinstatement or compensation for the balance of his contract, insisting there was no serious misconduct and that he was performing the controversial character the network relied upon to drive ratings.

ARN’s countersuit reframes that narrative, arguing that any damage to the business – and to one of Australian radio’s most lucrative franchises – lies at the feet of its former stars.

High‑stakes showdown heads back to court

With both broadcasters suing ARN and the company now suing back, the dispute has morphed into one of the most complex and high‑stakes legal battles the Australian radio industry has seen.

The outcome will have ramifications not only for Sandilands and Henderson’s futures on air, but for how networks structure contracts with star talent, manage on‑air behaviour and allocate responsibility for workplace safety in personality‑driven programs.

Both matters are due to return to the Federal Court on Friday for further procedural hearings, where the contours of this increasingly acrimonious stoush – and the size of the bill facing all sides – will continue to take shape.