Credit: Marcel Thomas/FilmMagic

Kate Plus 8 could lose six of its cast members if one Pennsylvania state lawmaker gets his way.

Rep. Thomas Murt argues state law permits children under the age of 7 to work in movies, but not on television.

This would make 35-year-old Kate Gosselin's sextuplets Aaden, Alexis, Collin, Hannah, Joel and Leah -- who turned 6 in May -- ineligible for filming.

On Tuesday, Murt sent a series of letters to the state attorney general and labor secretary which questioned the legality of the work permits.

State labor officials previously said that TLC producers should have obtained work permits for the original Jon & Kate Plus 8, though no penalties were imposed.

Twins Cara and Mady -- who are 9-years-old -- would still be allowed to continue filming.