Arizona's bitter debate over a signature part of President Barack Obama's health care overhaul has sparked an investigation into lawmakers' safety.

Although more than half of employers use social media for internal communications, they are unsure of its effectiveness, according to a new survey by global professional services company Towers Watson.

Of the countries with advanced economies, the U.S. is the only one that does not guarantee workers paid vacation time, according to a review by the Center for Economic and Policy Research.

Millennials, a survey finds, are more worried about debt than their day-to-day expenses.