Forms from the Internal Revenue Service.
The EEOC is responsible for enforcement of the Civil Rights Act of 1964 (Title VII), the Equal Pay Act (EPA), the Age Discrimination in Employment Act (ADEA), and the Americans with Disabilities Act (ADA).
The Department of Labor (DOL) 
There are many agencies within the DOL that are helpful to human resource issues.
Some of interest would be:
Occupational Safety and Health Administration (OSHA) 
OSHA’s role is to assure the safety and health of America's workers by setting and enforcing standards; providing training, outreach, and education; establishing partnerships; and encouraging continual improvement in workplace safety and health.
The Wage and Hour Division (WHD) 
The WHD is responsible for administering and enforcing some of our nation’s most comprehensive labor laws, including: the minimum wage, overtime, and child labor provisions of the Fair Labor Standards Act (FLSA); the Family and Medical Leave Act (FMLA); the Migrant and Seasonal Agricultural Worker Protection Act (MSPA); and worker protections provided in several temporary visa programs.
Office of Disability Employment Policy (ODEP) 
ODEP provides information of employment issues related to the Americans with Disabilities Act (ADA).
The Bureau of Labor Statistics (BLS) 
The BLS is the principal fact-finding agency for the federal government in the broad field of labor economics and statistics.
State Human Resources and Labor Information 
There is information available on the federal DOL site that will link you to individual state organizations related to labor issues.
ELAWS stands for "Employment Laws Assistance for Workers and Small Businesses." This Web site was developed to help employers and workers understand their rights and responsibilities under the federal employment laws administered by the U.S. DOL.