The German Labor Front (DAF) was the Nazi Party's labor wing which, from 10 May 1933 to May 1945, replaced Germany's various labor unions. Following Adolf Hitler's rise to power, the Nazi Party occupied union headquarters throughout Germany, confiscated their funds, abolished the unions, arrested the union leaders (sending many to concentration camps), and created the DAF with the dissolved unions' confiscated assets. The inexperienced Robert Ley was appointed to head the DAF, and the DAF included workers, employers, and professionals and had the goal of maximizing the work put forth by Germany's laboring class. The DAF assigned mandatory "workbooks" to Germany's workers in February 1935, enabling employers to withhold the workbooks from their employees to force them to remain at their company if the workers intended to switch jobs. To compensate for its restrictions on wages and employment, the DAF provided factory libraries and concerts, swimming pools, adult education, variety performances, theater visits, athletic events, subsidized opera tickets, and holiday cruises. By 1939, the DAF had over 35,000 full-time employees, operating its own bank, medical screening, occupational training, legal assistance, and a propaganda wing. By 1945, the DAF had 25 million members, but it was outlawed and dissolved on the end of World War II in May 1945.