459 What is possibly the world's first recognizable labor union is formed in modern Turkey
1871 Trade Union Act - British trade unions legalized.
1872 Trade unions legalised in Canada.
1894 Pullman Strike: Three thousand Pullman Palace Car Company workers go on a "wildcat" (without union approval) strike in Illinois.
1913 Start of Dublin Strike & Lockout, all trade union members dismissed
1923 Trade unions banned in Spain for 10 years.
1926 UK General Strike 1926: In the United Kingdom, a general strike by trade unions ends (the strike began on May 3).
1933 ''Gleichschaltung'': Adolf Hitler bans trade unions.
1936 The United Auto Workers union stages its first sit-down strike.
1938 Trade union members elect John L. Lewis as the first president of the Congress of Industrial Organizations.
1964 Four of five railroad operating unions strike against the Illinois Central Railroad without warning, to bring to a head the five-year dispute over railroad work rules.