Here are some government agency websites that will give you more information about the laws they enforce and the procedures they follow.

Equal Employment Opportunity Commission - the federal agency that enforces the civil rights laws that protect employees
U.S. Department of Labor - the federal agency that enforces the Fair Labor Standards Act, the Family and Medical Leave Act  and employment protections for employees of federal contractors
Arizona Attorney General-Civil Rights - the state agency that enforces the Arizona Civil Rights Act
National Labor Relations Board - the federal agency that regulates labor management relations for most employees in the private sector
National Mediation Board - the federal agency that regulates labor management relations in the railway and airline industries
Industrial Commission of Arizona - the state agency that regulates worker compensation, safety and payment of wages
Federal Labor Relations Authority - for federal employees
Merit Systems Protection Board - the federal agency that hears appeals by federal employees over various grievances
Arizona Department of Economic Security - the state agency that governs unemployment compensation
State Bar of Arizona - the organization that regulates the licensing, specialty certification and discipline of attorneys in Arizona