Why the company answers for the driver. Under long-standing law, an employer is generally responsible for an employee's negligence committed in the course of the job. A driver hauling a load for a carrier is squarely inside that rule. Companies can also face claims for their own conduct — negligent hiring, inadequate training, pushing schedules that violate federal hours-of-service limits, or failing to maintain equipment.
Sometimes more than one company. The tractor and trailer may have different owners. The cargo may have been loaded by a third company. Maintenance may be contracted out. Each may bear a share of responsibility, and each may have its own insurer — which matters, because federal rules require most interstate for-hire carriers to maintain at least $750,000 in liability coverage.
Contractor situations. Some drivers are independent contractors rather than employees. That changes the analysis but rarely ends it — federal regulations and the specific facts of the relationship still determine who answers for the crash.
What it takes. The records proving a company claim live with the company: driver qualification files, logs, dispatch records, maintenance files. A written preservation request early in the case is what keeps that path open. And Arizona's pure comparative negligence rule applies throughout: partial fault reduces a claim by percentage — it does not end it.
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