There were no stamps after June 1942; instead, employers directly deducted a portion of the wages of civilian forced laborers for invalidity insurance. However, in order that existing receipt cards could still be used, this supplementary sheet was inserted. Employers noted on this sheet three things: the period for which they had transferred money, the amount of money that was transferred as contribution, and the insurance company that had received the money. They entered the name and address of their company in the last column. Today, this information provides details of where the person was required to perform forced labor.