In Railway Company v. Allerton, the Supreme Court of the United States was asked to decide whether a railway company was liable for damages caused by a train accident. The plaintiff, Allerton, was a passenger on the train when it collided with another train, resulting in serious injuries. Allerton sued the railway company, claiming that the company was negligent in its operation of the train. The Supreme Court held that the railway company was liable for the damages caused by the accident. The Court reasoned that the railway company had a duty to exercise reasonable care in the operation of its trains, and that it had breached this duty by failing to take proper precautions to prevent the accident. The Court also noted that the railway company had failed to provide adequate warnings to passengers about the risks of riding on the train. The Court concluded that the railway company was liable for the damages caused by the accident, and ordered the company to pay Allerton for his injuries. This case established the principle that railway companies are responsible for the safety of their passengers, and must take reasonable steps to ensure that their trains are operated safely.

In the case of Railway Company v. Allerton, the Supreme Court was tasked with determining whether a railway company had to pay damages for an accident that occurred on its property due to negligence by one of its employees. The majority opinion held that since the employee's actions were not authorized or ratified by the company, it could not be held liable for his negligence and thus did not have to pay damages. However, in dissent Justice Field argued that under common law principles of respondeat superior (Latin for "let the master answer"), employers are responsible for their employees' negligent acts if they occur within scope of employment and regardless if those acts were authorized or ratified by them. He further noted that this principle has been accepted as part of American jurisprudence since before independence from England and should apply in this case as well; therefore he would have found in favor of Allerton against Railway Company requiring them to pay damages resulting from their employee's negligence.