The Occupational Outlook Handbook is a nationally recognized source of career information, designed to provide valuable assistance to individuals making decisions about their future work lives. Revised every two years, the Handbook describes what workers do on the job, working conditions, the training and education needed, earnings, and expected job prospects in a wide range of occupations.
http://www.bls.gov/oco/
The Occupational Information Network (O*NET) and O*NET OnLine were developed for the US Department of Labor by the National O*NET Consortium.
http://online.onetcenter.org/
NHetwork
http://nhetwork.nhes.state.nh.us/nhjs/front.asp