"Eastern worker") was a Nazi German designation for foreign slave workers gathered from occupied Central and Eastern Europe to perform forced labor in Germany during World War II. The Germans started deporting civilians at the beginning of the war and began doing so at unprecedented levels following Operation Barbarossa in 1941. They apprehended Ostarbeiter from the newly-formed German districts of Reichskommissariat Ukraine, Distrikt Galizien (itself attached to the General Government), and Reichskommissariat Ostland.