Alice owns a manufacturing company. To keep her workers safe, she does a weekly safety reminder every Monday morning, rehashing different issues that could lead to accidents. Assume that this Monday the topic was "Hydraulic Injection Injuries" (HII / ICD10 T70.4 / ICD11 NF04.3). One of the rules repeated is never to touch the hydraulic hoses while under pressure to prevent a damaged hose from injecting its oil into the worker.
Tuesday rolls around, and a machine with hydraulics is put down for maintenance after it breaks close to the end of the shift. A huge warning sign is attached to it, marking it as potentially dangerous.
Wednesday rolls around and Bob, old as stone, knows it all, (and never listens on the Monday refreshers), goes to fix the machine. He ignores the handbook that tells to depressure the machine and instead goes to look for leaks, running his hand down a filthy, greasy line, and promptly caught a small Hydraulic Injection Injury while "detecting leaks". He doesn't bother to alert other staff immediately but manages to swap the hose, and put the machine back into working order before clocking out and leaving for the hospital - still not telling anyone.
When Bob ends up in the hospital, he tells Doctor Charly that he did "prick himself at work with some rusty crud" in the hand. Doctor Charly is either not aware of HII or lacks suspicion to treat it correctly. Either way, the treatment for sepsis prevents Bob's death, but the arm has to be amputated.
Clearly, we have a workplace injury of some sort, so before anything, Alice's insurance and Workers' Comp should pay for the bills. But on the other hand, there are half a dozen violations of the workplace safety protocol by Bob. Those violations lead to the injury despite schooling, and established protocols for maintenance, as Bob just ignored those and did things as he always does.
Is Bob's active ignorance and disregard of the safety protocol enough to lessen the amount Alice's Workers' Comp needs to pay?
If it matters, assume Alice and her managers do not know Bob ignores safety protocols on the regular, and no track record of any reported violations from any coworker exists, neither formally nor informally.