Dr Bill Hodge says the expense of legal uncertainty will drive away future productions, and that the law as it stands works and "doesn't need fixing".
The Minister for Workplace Relations and Safety has met with representatives from across the film sector.
Thurman starred in Pulp Fiction, produced by the disgraced Hollywood mogul.
Contractors working in the film industry will soon be able to collectively bargain again.
The Hunt for the Wilderpeople star was standing in for mate Taika Waititi at the Thor: Ragnarok premiere in Auckland.
He has opened up to Sunday about the night that put his "life and future at risk".
Waititi proved a hit with the stars and audience alike on Australian TV’s The Project.
The Boy star told TVNZ1's Sunday show he was helped through the ordeal by his good friend and fellow actor Cliff Curtis.