Warner Bros TV has postponed the season 8 production of the CBS comedy as five original stars Jim Parsons, Johnny Galecki, Kaley Cuoco, Simon Helberg and Kunal Nayyar are still without contracts, reported Ace Showbiz.
"Due to ongoing contract negotiations, production on 'The Big Bang Theory'-which was originally scheduled to begin today-has been postponed," the studio says in a statement.
The production was scheduled to kick off, but Parsons, Galecki, Cuoco, Helberg and Nayyar, who have been seeking hefty pay raises, remain without new contracts.
CBS has planned to launch the new season of 'Big Bang Theory' on September 22. It's unknown if the production delay will affect the premiere date.
