During the early twentieth century, progressives such as Presidents Theodore Roosevelt and Woodrow Wilson sought to pass legislation to improve working conditions and protect workers. One of the most prominent types of working condition reform was the regulation of child labor. Progressive politicians passed laws restricting the types of work children could do, as well as the hours when they could work. These laws were intended to protect children and encourage them to pursue an education. Another progressive working condition reform was the minimum wage, which was intended to prevent businesses from exploiting workers. Progressives also passed policies such as the 1932 Norris-La Guardia Act, which protected the rights of workers to unionize. Labor unions employed collective bargaining tactics to advocate for individual workers and organized strikes against business policies which workers believed to be unfair or exploitative.