Over six years, those workers, represented by union 32BJ SEIU, doubled their hourly wages to $12 in large part because of the minimum-wage legislation. (Their employers are subcontractors of American Airlines, which contracts with the city-run Philadelphia Airport.) But the legislation was not a silver bullet. When the workers' employers did not comply with the law, 32BJ and the advocacy group POWER, one of the main advocates for the $12-an-hour minimum wage and the latest $15 bill, organized protests and lobbied city government to get American Airlines to compel its subcontractors to follow the law.