 Among the slave laborers in the occupied territories, hundreds of thousands were used by leading German corporations including Thyssen, Krupp, IG Farben, Bosch, Blaupunkt, Daimler-Benz, Demag, Henschel, Junkers, Messerschmitt, Siemens, and Volkswagen, as well as Dutch corporation Philips.By 1944, slave labor made up one quarter of Germany's entire work force, and the majority of German factories had a contingent of prisoners.The Nazis came to power in the midst of Great Depression.