First National Labor Union Founded (US)
The National Labor Union was founded in Baltimore, the first national labor federation in the US
August 20, 1866
Workers Unite for the First Time
The earliest recognized labor unions emerged in Britain during the late 18th and early 19th centuries, as the Industrial Revolution transformed work. Craftsmen and tradespeople began organizing to protect wages and improve conditions. In the United States, the Federal Society of Journeymen Cordwainers, formed in Philadelphia in 1794, is often cited as one of the first true trade unions. Workers recognized that individually they had little power against employers, but together they could negotiate. These early unions faced harsh legal opposition — in many places, organizing was treated as criminal conspiracy — yet workers kept organizing anyway.
The Fight for Legal Recognition
For decades, unions operated in legal gray zones. Britain passed the Combination Acts in 1799 and 1800, making union organizing illegal. When those were repealed in 1824, union activity surged. In the U.S., courts initially ruled that unions were illegal conspiracies. That changed with the Massachusetts Supreme Court decision in Commonwealth v. Hunt (1842), which held that unions were legal organizations. This opened the door for broader labor organizing. The fight for the eight-hour workday became one of the labor movement's defining battles in the decades that followed.
Why Unions Changed History
Labor unions fundamentally reshaped the relationship between workers and employers. They won the weekend, the eight-hour workday, child labor protections, workplace safety rules, and minimum wage laws. Virtually every workplace protection that modern workers enjoy traces back to union organizing. The movement was never without conflict — strikes, lockouts, and sometimes violence marked its history. But the core principle held: workers, acting together, could demand dignity and fair treatment. The birth of the labor union movement ranks as one of the most consequential social developments of the modern era.