The development of the worker?s organization in the country may be traced back to as early as 1899 during the end of Spanish rule and the beginning of the American era. The creation of the Bureau of Labor by the Philippine Assembly in 1901 made possible the formation of loosely organized trade unions. Although legalized, they were not protected by the Bureau of Labor. Hence, the union movement thrived and flourished under the influence of the first American settlers and the First World War up to 1924.