; and (2) the number of employees receiving a score of 4 out of 5 (or an equivalent rating with respect to a performance appraisal system that does provide for such a scoring system) does not exceed 50 percent of all employees in that agency. (b) Report Not later than 1 year after the date of enactment of this Act, the Director of the Office of Personnel Management shall submit to Congress a report that contains recommendations for a single-agency rating system. (c) Collective bargaining agreements (1) Application The requirements of this section shall apply to any collective bargaining agreement entered into by the head of an agency on or after the date of enactment of this Act. (2) Grievance In the case of an employee covered by a collective bargaining agreement referred to in paragraph (1), a grievance filed on behalf of such employee that results in an increased performance rating for such employee may not result in an increase in annual rate of pay for such employee. (d) Definition In this section, the term employee has the meaning given such term in section 2105 of title 5, United States Code, and includes any officer or employee of the United States Postal Service or the Postal Regulatory Commission. 6. Forfeiture of CSRS or FERS annuity for any employee convicted of a felony (a) In general Subchapter II of chapter 83 of title 5, United States Code, is amended by adding at the end the following: 8323. Forfeiture of annuity for felony conviction (a) (1) An individual appointed to the service who is not subject to the requirements of section 2 of the Promote Accountability and Government Efficiency Act may not be paid an annuity or retired pay on the basis of the service of the individual which is creditable toward the annuity if the individual was finally convicted of a felony offense. (2) For purposes of paragraph (1), the term felony offense means any felony offense committed by the individual that is related to the performance of any position within the service occupied by such individual. (b) An