This Major U.S. Metropolis Is Requiring All City Employees to Work In-Office 5 Days a Week Philadelphia is the first city to implement the five-day-a-week in-office mandate. It went into effect on Monday. Previous Article This Former Disney Princess Lived 'Paycheck to Paycheck' Before Starting a Side Hustle at Home — Now She Makes $250,000 a Year Next Article Beware of These Risky Sales Tactics That Are Doomed to Fail or Backfire