Former German Chancellor Gerhard Schroeder (L) and Billionaire Nicolas Berggruen sit on a table for lunch at a Karstadt store located on the Kurfuerstendamm boulevard in Berlin September 3, 2010. Germany's Labour Ministry von der Leyen said on Friday all the necessary documentation for a takeover of retail firm Karstadt by Nicolas Berggruen had been signed. REUTERS/Fabrizio Bensch (GERMANYEMPLOYMENT BUSINESS - Tags: EMPLOYMENT BUSINESS POLITICS)