More info. from a USA source (Jeep owner is off the hook):
“As Femminineo explained to Jalopnik, the Hawkins family can’t directly sue the dealership or its management. Michigan workers’ compensation law says you cannot sue a fellow employee for negligence while on the job. So the Hawkins family’s only option was to sue the Jeep owner. But that doesn’t mean the Jeep owner will be held responsible for the accidental death.
According to Femminineo, when the Hawkins family filed suit against the Jeep owner, that person immediately sued the dealership for indemnification, and won. With that victory in place, whatever results from the Hawkins family’s suit against the Jeep owner will be the legal responsibility of Rochester Hills Chrysler Jeep Dodge (and their insurance company). Basically, while the owner of the Jeep is named in the suit, that person won’t face any repercussions from the trial or judgment.”
https://jalopnik.com/why-a-jeep-owner-is-being-sued-for-a-mechanics-death-du-1848884952
and
This is a standard “third party over” lawsuit to get the Employers Liability policy to pay instead of its workers’ comp policy Businesses always buy employers liability and workers comp in one combined package.
And it is exactly this sort of ridiculous reasoning and "proecedure" that makes the legal system look like the work of a child.
Natural Law needs to be resurrected.