More than 100 baggage handlers at Philadelphia International Airport plan to stop work and demonstrate for higher wages outside the airport Thursday morning at 7 a.m.The walkout follows the firing of worker Misha Williams after she demonstrated for higher wages, local 32BJ SEIU, a property services' workers union representing the workers, wrote in an e-mail.The workers say their employer, PrimeFlight, is disregarding an executive order by Mayor Michael Nutter issued in May raising the minimum wage for city contractors to $10.88 an hour.The workers receive a salary, on average, of $7.25 an hour.U.S. Airways and American Airlines, which use PrimeFlight, said the demonstration won't affect their passengers."We won't have a disruption in our services. ... In terms of bags being checked in and boarded on planes, that's all handled by American Airlines employees," said Victoria Lupica, a spokeswoman for both airlines. "We're not replacing them, but our employees will supplement their service."PrimeFlight did not respond to request for comment.