'Mrs Brown's Boys' creator Brendan O'Carroll is being sued by former co-star Gary Hollywood.
Brendan O'Carroll
Gary, 41, who played Dino Doyle in the sitcom before quitting earlier this year, is suing Brendan, 65, for constructive dismissal and workplace discrimination.
He is also taking legal action against the BBC.
Gary told the Daily Star Sunday: "I feel I wasn't being paid equally and I wasn't being given an explanation for decisions.
"When I tried to resolve it, nothing was done. I was just disregarded. But I won't put up with it any more. I won't be ¬treated like that. This has gone too far. They shouldn't do this to people.
"I am taking legal action. The papers have been lodged for a tribunal and the process has now started."
Gary claims he was paid less than his co-stars for spin-off show 'All Round To Mrs Brown's' and says he was dumped from a festive special after raising the issue.
He explained: "I hope this tribunal will mean people take responsibility. If there has been wrongdoing, I want people to admit that. I just want the truth.
"I'm not a greedy person, but I want to be compensated for times when I haven't been paid fairly."
Gary added he was shocked that Brendan recently claimed their relationship was "amicable" following Gary's departure.
He said: "I was absolutely gobsmacked. I would have stayed quiet about all of this. Does he expect me to crawl into a corner and shut my mouth?"
'Mrs Brown's Boys' follows loud-mouthed Irish matriarch Agnes Brown - played by Brendan - who meddles in the lives of her six children.
It was claimed in October that Gary and co-star Damien McKiernan - who played his partner Rory Brown - quit the popular BBC sitcom after they learned they were being paid less than their fellow castmates and were told they wouldn't be appearing in the Christmas specials.
The pair are not the first to leave the show as Rory Cowan - who originally played Rory Brown - quit the show in 2017 after he revealed he had not enjoyed being on set for the previous two years.