Employers violated California Covid regulations(a public health order) in mid 2020 and brought in a bunch of workers from a separate work site that had been hit with a covid outbreak. The workers protested but were ignored. One of the workers caught covid from the new workers and then his wife got it from him. She was hospitalized and kept alive on a respirator for weeks.
The Supreme Court of California ruled that although the employer's actions caused the harm to him and his wife, they could not be held liable as it would set a precedent that was too hard for businesses and the state to meet as far as protecting their employees from infectious disease. So they will simply be abandoned.