Twenty-eight female guards were unfairly dismissed by a security company because the client‚ Metrora.
Jay-Z will help reopen Los Angeles' landmark, the Hollywood Palladium, with a big band show on October 15.
The rapper will be backed by a 12-piece band, according to reports.
The Hollywood Palladium closed in April last year for major renovations.
Frank Sinatra helped launch the venue when it first opened in 1940.
He was a member of the club's first act, the Tommy Dorsey Orchestra.
Jay-Z says: "I'm honoured to play at such an iconic venue.
"Just as Frank [Sinatra] ushered in a golden era, I hope this opening will mark the beginning of a resurgence in generation-defining live music." - Wenn