b) The Triangle Shirtwaist Factory Fire

The tragic event in 1911 that spurred reforms in workplace safety and labor laws was The Triangle Shirtwaist Factory Fire in New York City. This disaster, one of the deadliest industrial accidents in U.S. history, claimed the lives of 146 garment workers, mostly young immigrant women. The fire exposed the unsafe working conditions and led to significant changes in fire safety standards, labor laws, and factory inspections, marking a turning point in labor rights and workplace safety.