In the case of Shields v. Atlantic Coast Line Railroad Co., 1955, the United States Supreme Court ruled in favor of the railroad company. The plaintiff, Shields, was a worker who had been injured on the job and sought compensation under Federal Employers' Liability Act (FELA). However, his claim was denied by lower courts because he failed to provide sufficient evidence that negligence by his employer caused his injury. Upon appeal to the Supreme Court, it upheld this decision stating that FELA requires employees to prove their injuries were due to their employer's negligence and not just an unfortunate incident at work. This ruling reinforced employers’ obligation for maintaining safe working conditions but also emphasized workers' responsibility in proving any alleged neglect.

The dissenting opinion in the Shields v. Atlantic Coast Line Railroad Co., 1955 case argued that the majority's decision to uphold a state law requiring railroads to maintain fences along their tracks was an undue burden on interstate commerce. The dissent contended that this requirement, which applied even when trains were not running, was unreasonable and excessive. It also pointed out inconsistencies in how different states regulated railroad fencing, leading to confusion and inefficiency for interstate rail companies. Furthermore, it suggested that such regulations should be handled at a federal level rather than by individual states due to the inherently interstate nature of railway transportation. Thus, according to the dissenters' view, upholding such laws could potentially disrupt uniformity and efficiency in national transport systems.