This claim should all be covered by workers compensation insurance (medical & indemnity), with additional possible coverage from employers liability insurance - depending on nature of the individuals employment status.
100 million total coverage and this claim took 17 mil. to cover just the medical. I'm imagining future costs and a touch of pain and suffering on top of that. 20 mil. minimum? If so, 4 more claims like this and it's down to out of pocket.
Workers Comp covers all Indemnity & Medical costs for as long as he lives. No Pain & Suffering. No Punitive. There was a Primary & Excess Policy and the Insurance & Re-Insurance Companies are on the hook.