Employees with AFSCME District Council 33, Philadelphia's largest blue-collar workers union, went on strike at 12:01 a.m. Tuesday morning after union representatives and the city failed to reach a deal.

A strike being staged by nearly 10,000 city workers in Philadelphia has entered its second day. But a judge has ordered some emergency service dispatchers and essential water department employees to return to work.

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