The San Francisco Board of Supervisors passes an ordinance setting an eight-hour workday for all city employees - 1867

The Pacific Mail Steamship Co. fires all employees who had been working an eight hour day, then joins with other owners to form the "Ten-Hour League Society" for the purpose of uniting all mechanics "willing to work at the old rates, neither unjust to the laborers nor ruinous to the capital and enterprise of the city and state." The effort failed - 1867

The Knights of St. Crispin union is formed at a secret meeting in Milwaukee. It grew to 50,000 members before being crushed by employers later that year - 1867