New York (CNN Business) Meat-processing plant workers are concerned about President Donald Trump's executive order that compels plants to remain open during the coronavirus pandemic. Meat plant employees are among America's most vulnerable workers, and some say they expect staff will refuse to come to work.

"All I know is, this is crazy to me, because I can't see all these people going back into work," said Donald, who works at Tyson's Waterloo, Iowa, facility. "I don't think people are going to go back in there."

Donald asked to be referred to by his first name only. He is currently recovering after testing positive for the virus.

"I'm still trying to figure out: What is he going to do, force them to stay open? Force people to go to work?" he asked.

CNN Business has spoken to employees in several Tyson plants who do not want to be named for fear of losing their jobs.