The Inquirer. But it’s far from clear that leaders of that union — the American Federation of State, County and Municipal Employees District Council 47, which represents white-collar city workers — are itching for an opportunity to walk off the job and join their colleagues in the much larger blue-collar union,

Philadelphia's largest city workers' union is on strike for the first time in nearly 40 years on Tuesday after a deal couldn't be reached with the city.