Conversation so far:
who led the movement for child labor reform
In 1883, the labor union leader Samuel Gompers led the New York labor movement to successfully sponsor legislation prohibiting cigar-making in tenements, where thousands of young children worked.
where was the labor union leader Samuel Gompers from
Samuel Gompers was born on January 27, 1850, in Victorian London, England into a Jewish family that originally hailed from Amsterdam.
did the labor union leader Samuel Gompers found any organizations
Samuel Gompers founded the American Federation of Labor (AFL).

Question: what was the leader's occupations
Self-contained rewrite: what was the labor union leader Samuel Gomper's occupations