LOL! THE CAST OF THE JERSEY SHORE IS ON STRIKE!

The cast of "Jersey Shore" is so dissatisfied over their contract situation that they refused to shoot scenes for the upcoming third season until they get a better deal ... this according to sources connected with the show.

The cast was supposed to begin shooting "at home" scenes today for season three, but we're told JWoww, Ronnie, Sammi, Pauly D and Vinny -- who are spread out between New York and Rhode Island -- told the crews they weren't shooting without new contracts.

The Situation and Snooki are supposed to shoot tomorrow, and we're told Snooki plans to do the same. No word yet on The Situation, but as we first reported ... he's having contract issues of his own.

Sources close to the show tells TMZ the cast feels they can make more money doing appearances for two months, rather than filming the show.

A rep for MTV had no comment.