The Writers Guild of America denied requests late Monday that would have allowed the Hollywood Foreign Press Association to use guild writers on its upcoming Golden Globes broadcast, and the Academy of Motion Picture Arts and Sciences to include historical film clips on its February 24 Academy Awards broadcast.

In an e-mailed statement, the union president, Patric M. Verrone, said that any other course of action would undermine efforts to force film and TV studios to negotiate a new contract for writers.

“Writers are engaged in a crucial struggle to achieve a collective bargaining agreement that will protect their compensation and intellectual property rights now and in the future,” he said in the statement.

The Hollywood Foreign Press Association and Dick Clark Productions had sought a waiver for writers to work on the 65th Golden Globe ceremonies, scheduled to air on January 13. The Academy of Motion Picture Arts and Sciences asked to use clips from nominated films in its Oscars telecast. Suddenly, Hollywood’s annually anticipated awards shows are in danger of losing their stars, their viewers, and their revenue, though union plans to negotiate individual contracts with film production companies still may clear the way for writers to work on the shows. If progress cannot be made in this regard, Academy Awards host Jon Stewart, whose own “The Daily Show” has been in reruns since the strike began, may have trouble navigating cinema’s most important night.

Writers, who walked off the job November 5, have been unable to reach an agreement with the studios on the use of their work in digital media. Talks broke down for a second time on December 7 after the studios rejected demands for a bigger share of Web revenue and to extend union jurisdiction to include animation and reality shows.