While the economy lost 7.5 million positions during the 18-month recession, the health-care industry added doctors, nurses, and other hospital personnel. Together with the social assistance category, which includes day-care workers, career counselors, and similar positions, the sector will add more than 5.6 million employees and be the biggest job gainer by 2020, according to new projections by the Bureau of Labor Statistics. Manufacturing is forecast to lose 73,000 jobs by then. "The first baby boomer just turned 65 last year, so when it comes to health-care jobs, we haven’t seen nothing yet," says Chris Rupkey, chief financial economist at Bank of Tokyo-Mitsubishi UFJ in New York.