Let me add, perhaps there's a moral basis behind the regulations ("don't have machinery that chops worker arms off") but morality should have zero role to play

Let me add, perhaps there's a moral basis behind the regulations ("don't have machinery that chops worker arms off") but morality should have zero role to play as an implicit or explicit part of the regulation. "we don't have to include in the regulation "install shields on equipment to prevent harm to workers" because we expect the factory owners to take the necessary steps, based on their being moral people, to prevent it." Expecting good behavior based on the expectation of morality should never be part of any regulation.