Striking city workers are joining picket lines outside Philadelphia City Hall, public libraries and other worksites as nearly 10,000 unionized employees walked off the job in search of better pay and benefits.

Philadelphia residents have been warned to brace for a largescale workers' strike designed to shut down key infrastructure, such as garbage removal, starting Tuesday.

Trash is piling up across Philadelphia as the city's largest blue-collar union begins a massive strike, bringing essential services like trash pickup to a grinding halt.