As Gov. Rendell and state legislators consider a proposal for a $7 an hour minimum wage, they should also bear in mind Federal Reserve Board Chairman Alan Greenspan's warning that such a move "prevents people who are at the early stages of their careers... from getting a foothold in the ladder of promotions." Wage-hike proponents often argue that minimum-wage employees haven't had a raise since Congress last increased the national rate. But few entering the workforce at the minimum wage stay there for long. Nearly two-thirds get a raise within one to 12 months. Most low-wage earners simply don't need...
