Answer:
The Progressive Movement of the late nineteenth century and early twentieth century was against several labor practices of the time: Union busting (this means not allowing Labor Unions to form, or disrupting their practices), child labor, which was common not only in farms, but also in many factories and mines, very low salaries, and very long working days.
The Progressive Movement promoted changes in all of these fronts, but the achievements were slow.
It can be said that they were only fully achieved with the Fair Labor Standards Act of 1938, during the administration of Franklin D. Roosevelt.