On the first Monday of each September, America celebrates Labor Day; a holiday where, in tradition, all non-critical workers take the day off in recognition of labor laws. The laws were introduced to enforce and promote a fair market environment, while also ensuring safe working conditions.
After the Industrial Revolution, America enterprise was manufacturing. At the time labor laws only existed in Marxism; the United States economy was comprised of three classes: Laborers, Managers, and Owners. There wasn't a minimum wage, no safety regulations, no overtime; what the factory ordered is what the laborer had to do. Children were allowed/forced to work at this time as well.
Because working 10-hour shifts 6 days a week without overtime compensation is not what many would consider fair market; citizens across the country went on strike in May of 1882 demanding proper work environments. This introduced labor unions to the economy, thus creating Labor Day. A series of laws were passed regulating working conditions, child labor, a set minimum wage and overtime compensation; as well as other regulations protecting worker's rights.