In the case of Weaver v. Palmer Brothers Company, a dispute arose over whether or not an employer was liable for damages when one of their employees contracted lead poisoning from working with materials provided by the company. The Supreme Court ruled in favor of the employee, Mr. Weaver, stating that it is indeed an employer's responsibility to ensure safe working conditions and provide appropriate protective measures for its workers. This includes warning them about potential hazards associated with handling certain materials and providing necessary safety equipment to prevent harm or injury while on duty at work premises. In this particular instance, Palmer Brothers Company failed to do so which resulted in Mr.Weaver contracting lead poisoning due to prolonged exposure without proper protection.

In the dissenting opinion for Weaver v. Palmer Brothers Company, Justice Oliver Wendell Holmes Jr. argued that the majority's decision was based on an incorrect interpretation of the law and a misunderstanding of business practices. He contended that it is common in business to make contracts with uncertain terms, such as price adjustments depending on future market conditions or other variables. Therefore, he believed that the contract between Weaver and Palmer Brothers should not have been deemed void due to uncertainty about how much compensation would be owed if certain events occurred during its term. Furthermore, Justice Holmes pointed out that both parties had acted under this agreement for years without dispute until one party decided they wanted more money than what was originally agreed upon - suggesting they understood and accepted these uncertainties when entering into their contract initially.