Final answer:
Jane Addams and Lillian Wald were central figures in the social reform movement, creating settlement houses and advancing the cause of labor laws and workers' compensation. They contributed to the establishment of the Children's Bureau and advocated for protections for workers. Their work, alongside Florence Kelley, laid the groundwork for many social welfare practices still in use today.
Step-by-step explanation:
Alongside Florence Kelley's significant contributions to labor reform, Jane Addams and Lillian Wald played pivotal roles in the social reform movements of the early 20th century. Jane Addams is renowned for her establishment of Hull House in Chicago, a settlement house which provided a range of services such as child daycare, evening classes, and healthcare to assist the working class, particularly women and immigrants. She also worked towards ending child labor and actively participated in the women's suffrage and peace movements. Lillian Wald founded the Henry Street Settlement in New York, offering similar services as Hull House and became a leader in community-based health care and nursing. Both Addams and Wald helped to craft a political agenda that sought laws to improve housing conditions, labor practices, and to secure compensation for workers injured on the job.
Together with Kelley, they contributed significantly to the National Child Labor Committee's advocacy, leading to the creation of the Children's Bureau within the U.S. Department of Labor in 1912. The combined efforts of this trio of reformers were instrumental in shaping policies aimed at protecting workers, especially women and children, and enhancing social welfare during the Progressive Era. Their legacy is reflected in the continuation of many of their established institutions and the ongoing pursuit of social justice.