Herminigildo Cruz is known as a labor leader and former Director of Labor. He succeeded Dominador Gomez in leading the Union Obrero Democratica de Filipinas (UODF).
After the dissolution of UODF, Cruz, together with Crisanto Evangelista, organized the Congreso Obrero de Filipinas (COF) in an effort to unite the labor front. Though it was not able to sustain its hold on its affiliated unions, it was able to pass resolutions for protective labor standards, mainly for an 8-hour work day, protection of women and child labor, and social insurance.
At the early age of nine, Cruz worked as an apprentice typographer for La Independencia. At the age of nineteen, he became the spokesperson of striking workers at the La Independencia. He also worked as a proofreader in the old firm E.C. McCullough & Co. in Manila and later became the editor of El Trabajo.
Cruz became the first president of COF, in his desire to alleviate the pathetic conditions of the laborers. In 1918, he became the librarian of the Philippine Assembly and in the same year, he was delegated as the Assistant Director of Labor until he became the Director of Labor in 1924.
He also participated in organizations such as the Association of Civil Employees and the Philippine Anti-Tuberculosis Society.