Employee Verification Amendment Act of 2008

Employee Verification Amendment Act of 2008 - Amends the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 to extend the employment eligibility confirmation pilot programs (which includes the E-Verify basic pilot program). Directs the Commissioner of Social Security and the Secretary of Homeland Security to enter into a fiscal year agreement which shall: (1) provide funds to the Commissioner for such programs' full costs in quarterly advances; and (2) require an annual accounting and reconciliation of costs incurred and funds provided. Provides for funding continuation in the absence of an agreement. Requires that the Government Accountability Office (GAO) conduct studies regarding: (1) erroneous tentative nonconfirmations under the E-Verify program; and (2) such program's effects on small entities.