The Kyle Sandilands and Jackie “O” Henderson sacking saga has escalated again with Henderson now suing the duo’s former employer.

Proceedings commenced on Tuesday morning after Henderson filed the lawsuit against Commonwealth Broadcasting Corporation (CBC), a subsidiary of Australian Radio National (ARN) and KIIS 106.5’s licence holder.

An on-air spat with long-time radio partner Kyle Sandilands on February 20 led to Henderson walking off the air and issuing a complaint letter to CBC.

The letter noted that she “cannot continue to work with Sandilands” and made “psychosocial health and safety and bullying complaints” in relation to Sandilands.

Henderson’s lawsuit alleged the letter involved the “exercise or proposal to exercise workplace rights”, according to an ARN investors notice.

It also alleged her subsequent sacking was “because of that exercise or proposed exercise, in alleged contravention of … the Fair Work Act”.

Henderson claims ARN’s market announcement reporting the pair’s departure on March 3 “included misleading and deceptive statements”.

“The applicants claim compensation of ‘at least $82,250,000’ and payment of a pecuniary penalty, plus interest and costs,” ARN said.

“ARN disputes the claims. It intends to defend the proceedings.”

Henderson’s eye-watering compensation claim is just below the $85 million lawsuit brought by Sandilands against ARN.

The “king of radio” appeared in court for the first time last week to recoup the remainder of his $100 million contract.

“I didn’t do anything different than I’ve been doing for 25 years,” Sandilands said.

“It’s actually a little bit tamer than most days because I was actually quite concerned that, you know, she’s feeling good and everything’s OK.

“I just want to get back to work or earning. I’ve got a family; I’ve got mortgages like everyone else.”

The judge reserved five days for court proceedings in June to hear the matter.