It would have been simple to shoot the game show “The Floor” in Los Angeles. The city has many idle studios that could have easily accommodated its large display screen and the midnight-blue tiles that light up beneath contestants.

But Fox flies the show’s host, Rob Lowe, and 100 American contestants thousands of miles across the Atlantic Ocean to answer trivia questions about dogs, divas and Disney characters at a studio in Dublin. It makes more financial sense than filming in California.

In the past few years, as labor costs have grown after two strikes, producers of reality shows, scrappy indie movies and blockbuster films have increasingly turned away from Los Angeles to filming locations overseas.

Those business decisions have considerable consequences for the industry’s thousands of middle-class workers: the camera operators, set decorators and lighting technicians who make movies and television happen. Frustration has reached a boiling point, according to more than two dozen people who make their living in the entertainment industry. They say that nothing short of Hollywood, as we know it, is at stake.

“This is an existential crisis — it’s an extinction event,” said Beau Flynn, a producer of big-budget movies like “San Andreas,” which despite being about an earthquake in California was filmed mostly in Australia. “These are real things. I am not a dramatist, even though I’m in the drama field.”

Productions have been filmed outside the United States for decades, but rarely has Hollywood work been so bustling overseas at a time when work in Hollywood itself has been so scant. Studios in European countries are bursting at the seams, industry workers say. And film and television production in Los Angeles is down by more than one-third over the past 10 years, according to FilmLA data.