For those who need more evidence, a new book hopes to persuade them. When Mandates Work: Raising Labor Standards at the Local Level argues that San Francisco’s decision to increase the minimum wage and offer other benefits, such as sick leave pay, hasn’t hurt the city’s economy at all. The three editors—all labor experts—found that from 2004 to 2011 overall private employment grew 5.6 percent in San Francisco and 3 percent in Santa Clara County. Other Bay Area counties saw an overall 4.4 percent drop during that time. Among food-service workers, who are more likely to be affected by minimum-wage laws, employment grew 17.7 percent in San Francisco, faster than either of the other Bay Area counties.