I'm sure they signed contracts stated that they probably had to handle meat, and not just chicken. If you have a problem with the contract, don't sign it.
"The Work Connection, an employment agency based in St. Paul that hired workers for Gold'n Plump's plants in Cold Spring and Arcadia, was accused in the class-action lawsuit of requiring Muslim applicants for work to sign a "pork acknowledgement form," in which they agreed to handle pork products. It was alleged in the complaint that Somali workers who did not sign the document were not hired."
Really? That's the basis for the lawsuit? Fuck off. If everyone else does it, then you have to do it too. It's hardly unreasonable. I'm Hindu, and if I was asked to handle beef in my line of work and it was IN MY CONTRACT, then I'd damn well do my job.
You note that pork is also unclean to Jews. I don't see any Jews suing the factory.
As for prayers, it should come out of their lunch/morning/afternoon breaks.