Nixon Peabody LLP

US employees: 1,728
Last year's worldwide job growth: 9 percent
Most common job/Avg. salary for job: Associate attorney/$178,016

Nixon Peabody, a New York-based law firm that employs 373 people in its Boston office, is known for its charity -- the firm dedicates 3 percent its billable hours to pro-bono work, according to Fortune. The Boston office (pictured) is also an annual giver to Globe Santa.