LOS ANGELES (CBSLA) – Hollywood productions are one step closer to blackness as support grows for backstage entertainment workers who threaten to go on strike.

The board of directors of Local 600 of the International Cinematographers Guild voted unanimously in favor of the strike authorization approved by IATSE, the union that represents tens of thousands of entertainment workers. The Filmmakers Union is also urging its members to vote yes on the authorization, which begins October 1.

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The IATSE and the Alliance of Film and Television Producers have been at odds over safety and working conditions for months. The union – which represents Hollywood television and film workers such as cameramen, decorators and makeup artists – announced last week that it would go ahead with a strike permission vote.

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“This fight is about fundamental rights and safe and healthy working conditions,” said ICG National Executive Director Rebecca Rhine. “No one wants to strike, but we have had little choice from companies that make record profits from the work of our members, but are unwilling to treat these same workers with dignity and respect.

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The negotiations concern the successor contracts of the Basic Producer-IATSE Agreement, the Supplementary Agreement on Video Tapes and the Agreement on Film and Television Zone Standards which cover approximately 60,000 workers in 13 local branches of the Hollywood bargaining unit, according to the union.