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. My comment would be what has become common place in Hollywood when actors get to big for their britches - RECAST!