David Oberweiser has conducted oral histories and written newspaper as well as journal articles Latino labor history and the CIO of California. His written works include the essay "The CIO: A Vanguard for Civil Rights in Southern California, 1940-1946" and can be found in the anthology American Labor in the Era of World War II which was edited by Sally M. Miller and Daniel A. Cornford. His recent work is an oral history on the Cuban sugar workers and has wrote a manuscript on the San Francisco Ship Scalers Union. He is also graduated from the University of New Mexico in 1965.

Oberweiser wrote for the People's World and some of his work was published under the pseudonym Carl Morgen.