SAN FRANCISCO - JULY 13: San Francisco mayor Gavin Newsom (L) greets Levi's employees outside of the Levi Strauss headquarters after a press conference July 13, 2009 in San Francisco, California. After 156 years in San Francisco, the Levi Strauss Company has announced plans to renew the lease on its 400,000-square-foot headquarters in downtown San Francisco after a year long search that might have moved the company out of the city. One thousand two hundred employees work at the Levi's headquarters.