(1)
(A) The Secretary of the Treasury may, subject to criteria to be prescribed by the Office of Personnel Management, establish one or more broad-banded systems covering all or any portion of the Internal Revenue Service workforce.
(B) With the approval of the Office of Personnel Management, a broad-banded system established under this section may either include or consist of positions that otherwise would be subject to subchapter IV of chapter 53 or section
5376.
(4) The criteria to be prescribed by the Office of Personnel Management shall, at a minimum
(A) ensure that the structure of any broad-banded system maintains the principle of equal pay for substantially equal work;
(B) establish the minimum and maximum number of grades that may be combined into pay bands;
(C) establish requirements for setting minimum and maximum rates of pay in a pay band;
(D) establish requirements for adjusting the pay of an employee within a pay band;
(E) establish requirements for setting the pay of a supervisory employee whose position is in a pay band or who supervises employees whose positions are in pay bands; and
(F) establish requirements and methodologies for setting the pay of an employee upon conversion to a broad-banded system, initial appointment, change of position or type of appointment (including promotion, demotion, transfer, reassignment, reinstatement, placement in another pay band, or movement to a different geographic location), and movement between a broad-banded system and another pay system.