In the case of The Missouri Pacific Railway Company v. Castle in 1911, the Supreme Court ruled on a dispute involving an employee injury claim against his employer, a railway company. Mr. Castle was injured while working for the Missouri Pacific Railway Company and sought compensation under Kansas state law which allowed employees to sue their employers for injuries sustained due to negligence or other fault by the employer. However, because he had signed an employment contract that included a clause waiving his right to sue under this law, the company argued that he should not be able to bring suit against them. The Supreme Court disagreed with this argument and sided with Mr. Castle in its decision. It held that such contractual clauses were invalid as they violated public policy by allowing companies to evade liability for their actions or negligence leading to worker injuries - essentially enabling them from escaping responsibility towards ensuring safe work conditions for their employees.

In the dissenting opinion for The Missouri Pacific Railway Company v. Castle, 1911, it was argued that the plaintiff should not be allowed to recover damages because he had willingly assumed risk by engaging in a dangerous occupation. It was contended that an employee who voluntarily accepts employment with full knowledge of its risks cannot later claim compensation if they are injured as a result of those known dangers. This view held that employees have personal responsibility for their safety and must bear the consequences if they choose to work in hazardous conditions without taking necessary precautions or demanding safer working environments from their employers. Furthermore, this perspective emphasized that allowing such claims would place undue burden on businesses and could potentially discourage economic growth and development.