Guess how much the Modern Family stars earn per episode? They're not happy.

The cast of Modern Family.

The offer of $325,ooo per episode was not enough for five Modern Family cast members who are suing 20th Century Fox.

Sofia Vergara, Ty Burrell, Julie Bowen, Jesse Tyler Ferguson and Eric Stonestreet are hoping to have their contracts nulled so they can increase their salaries, in tune with the success of the show. (The show was recently nominated for 14 Emmy awards).

Their lawyers will argue the current contracts should be scrapped because they prohibit the stars from other work.The current contracts bind the actors to working on the show from February 2009 until June 30, 2016.

They’ll also argue the current contracts are illegal under a Californian law that prohibits personal service contracts from extending past seven years.

News.com reported:

The Hollywood Reporter claims that Fox recently offered to increase the cast salary to $US150,000 per episode with a $50,000 per episode bonus for season four; $200,000 per episode for season five, $225,000 for season six and up to $325,000 for a probable season nine.

This offer was reportedly rejected with the actors wanting much more. In the final season of hit sitcom Friends, Jennifer Aniston and her co-stars were receiving $1 million per episode.

Ed O’Neill who was initially not involved in the lawsuit has reportedly collaborated with his cast mates.

Modern Family is a popular ABC series which recently concluded its third season.