Erlinda Valencia came from the Philippines almost two decades ago. Like many Filipinos living in the San Francisco Bay Area, she found a minimum-wage job at the airport, screening passengers' carry-on bags.
Two years ago, organizers from the Service Employees International Union began talking to the screeners. Valencia decided to get involved and eventually became a leader in the campaign that brought in the union. "It seemed to us all that for the first time, we had a real future," she recalls. A new contract raised wages to more than $10 an hour, and harassment by managers abated.