Activist who served as president of the United Auto Workers union during the 1980s and 1990s.
As a young man, he worked for the Hudson and Cadillac automobile companies.
He worked as the United Auto Workers Department Director for the General Motors Company.
His marriage to Shirley M. Van Woerkom produced five children.
Michael Moore's documentary Roger & Me dealt with General Motors' restructuring efforts; Bieber was heavily involved in these efforts.