Excuse the mess... under construction...

FEDERAL GOVERNMENT:

IRS.gov
Department of Labor
SSA.gov
SSA Wage Reporting Guide for Employers
New Hire Reporting
Child Support Enforcement
Fair Labor Standards Act

U.S. CITIZENSHIP & IMMIGRATION

I-9 Eligibility
US Immigration & Custom Enforcement (ICE)
E-Verify
Homeland Security

STATE TAX LINKS

California EDD
California Franchise Tax Board
Indiana Local Taxes
Maine Withholding Tax Tables
Maryland Local Taxes
RITA (Regional Tax Agency)
Ohio Local Taxes
Pennsylvania Local Taxes