; and (2) the appropriate State, local government, or tribal agency to contact for further information about such services and programs. 4. Employee retention work opportunity credit (a) In general Section 51 of the Internal Revenue Code of 1986 is amended by adding at the end the following new subsection: (l) Employee retention credit (1) In general The amount of the work opportunity credit determined under subsection (a) for the taxable year shall be increased by an amount equal to 40 percent of the qualified second-year wages for such year with respect to previously subsidized employees. (2) Qualified second-year wages (A) In general For purposes of this subsection, the term qualified second-year wages means qualified wages (determined as if previously subsidized employees were members of a targeted group)— (i) which are paid to a previously subsidized employee, and (ii) which are attributable to service rendered during the 1-year period beginning on the day after the last day of the 1-year period with respect to such employee determined under subsection (b)(2). (B) Limitation The amount of the qualified second-year wages which may be taken into account with respect to any individual shall not exceed $6,000 per year. (3) Previously subsidized employee For purposes of this subsection, the term previously subsidized employee means an individual who is hired by an employer through the subsidized employment program under title XIII of the Social Security Act and who has been employed by the same employer for a consecutive 24 months as of the last day of the preceding taxable year. . (b) GAO study The Comptroller General of the United States shall conduct a study on the employee retention credit under section 51(l) of the Internal Revenue Code of 1986 and, not later than 6 months after the last day of the second taxable year beginning after the date of the enactment of this Act, shall report to the Committee on Finance of the Senate and the Committee on Ways and Means of the House of Representatives— (1) whether