Which industry was the focus of Upton Sinclair's novel 'The Jungle', leading to labor reforms?

According to the bureau of labor statistics, in which decade of the past 60 years did the largest percentage of the work force in this country belong to labor unions? Round off to the nearest five years.

Which president signed the Occupational Safety and Health Act into law in 1970?

What is the name of the labor union federation that merged with the CIO in 1955?

What term describes an arrangement where all employees must join the union as a condition of employment?

In what year was the Fair Labor Standards Act signed into law in the United States?

What type of labor action involves employees reporting to work but deliberately reducing productivity?