Illinois Job and Employment Demographics - Population, labor force, unemployment, household income, per capita income, and largest employers statistics and much more. An excellent resource from Career Infonet.
Illinois Employment Security - "Your direct link to Illinois workforce services: job placement and referrals, unemployment insurance, employment and training programs, career and labor market information, payroll tax filing, and more!" Also see "Illinois Workforce Information" for career and job searches.
Illinois Job Search Websites - In addition to searching the major employment websites for positions, you may want to expand your search to local Illinois job search websites. Some job openings are listed only on local Illinois websites.