Recent examples, says the guild, include all three parts of New Line Cinema's The Lord of the Rings trilogy, which were shot in New Zealand.
The union says runaway production has cost its members nearly US$23 million ($51 million) in potential contributions to the guild pension and health fund over the past five years.
This week the union named more than than 250 high-profile stars who endorse its campaign and took out full-page ads in Hollywood trade papers listing many of them.
They included Jamie Lee Curtis, Richard Dreyfuss, Clint Eastwood, Laurence Fishburne, Kevin Spacey, Kathleen Turner and Harrison Ford.
The studios say that Global Rule One goes beyond the scope of the union's film-TV contract with producers and violates the "spirit and intent" of that pact.
- REUTERS
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