Back to Work Extension Act of 2011 - Amends the Internal Revenue Code to extend for one year the exemption from employment and railroad retirement taxes for employers who hire certain unemployed individuals prior to January 1, 2012 (currently, January 1, 2011).
Appropriates to the Federal Old-Age and Survivors Insurance Trust Fund and the Federal Disability Insurance Trust Fund under title II of the Social Security Act amounts necessary to cover any reduction in revenues resulting from the tax exemptions provided by this Act.