Progressive Era Labor Rights Reforms

During the early 20th century, a series of reforms aimed at addressing the problems caused by industrialization and urbanization swept through the United States. These reforms, known as the Progressive Era Reforms, sought to eliminate corruption in government, improve working conditions, and increase democratic participation. Among the various initiatives, one reform movement stood out in its impact on labor rights.

Which of the following Progressive Era reforms primarily focused on improving working conditions and labor rights for workers?