Arbeitslager is a German language word which means labor camp. Under Nazism, the German government used forced labor extensively, starting in the 1930s but most especially during World War II. Another
Arbeitsbuch Für Ausländer (Workbook for Foreigners) identity document issued to a Polish Forced Labourer in 1942 by the Germans, together with a letter "P" patch that Poles were required to wear to identify them to the German population.
HASAG was a German metal goods manufacturer founded in 1863. Based in Leipzig, it grew from a small business making lamps and other small metal products by hand into a large factory and publicly trade
HASAG plant in Częstochowa, occupied Poland. Nearby plant at Skarżysko-Kamienna had an estimated death toll of 35,000 people before 1945