How successful were labor union in improving working condition?

Labor unions have historically played a significant role in improving working conditions by advocating for better wages, safer workplaces, and reasonable hours. Their efforts led to key reforms, including the establishment of the eight-hour workday and various safety regulations. While the success of unions can vary by industry and region, their collective bargaining power has resulted in substantial advancements in labor rights and protections over time. Overall, unions have been instrumental in shaping labor standards that benefit workers today.