Klaus Jacobs, co-founder of Adecco SA, died Wednesday, Sept. 10. He was 71 and had suffered from a brain tumor for about a year. Jacobs founded Adecco after he merged Adia Interim SA with Ecco SA in 1996. He left the board of Adecco in 2002 to return in 2004 amid the accounting scandal that rocked Adecco. In 2005 he became chief executive and chairman of the company. A year later he stepped down but remained the major shareholder.