Career One Stop (U. S. Department of Labor and others)
Contains information about trends.
Career Guide to Industries Gov Doc REF L 2.3/4-3:
Career Voyagers designed to provide information on in-demand occupations along with the skills and education needed to attain those jobs.
Dictionary of Occupational Titles Gov Doc REF L 37.2:OC 1/2/991/V.1-2
Employment Projections (BLS) Provides tables of statistics on the outlook for numerous occupations.
O*Net Online contains continually updated occupational information and labor market research.
Occupational Outlook Handbook Gov Doc REF L 2.3/4:
Occupational Outlook Quarterly Gov Doc Fed L 2.70/4: