IWW
By this time using the name Joe or Joseph Hillstrom (possibly because of anti-union blacklisting), he joined the Industrial Workers of the World (IWW) or Wobblies around 1910, when working on the docks in San Pedro, California. In late 1910 he wrote a letter to the IWW newspaper Industrial Worker, identifying himself as a member of the IWW local chapter in Portland, Oregon.
He rose in the IWW organization and traveled widely, organizing workers under the IWW banner, writing political songs and satirical poems, and making speeches. He shortened his pseudonym to 'Joe Hill' as the pen-name under which his songs, cartoons and other writings appeared. His songs frequently appropriated familiar melodies from popular songs and hymns of the time. He coined the phrase "pie in the sky", which appeared in his song "The Preacher and the Slave" (a parody of the hymn "In the Sweet By-and-By"). Other notable songs written by Hill include "The Tramp", "There is Power in a Union", "The Rebel Girl", and "Casey Jones—the Union Scab".
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