Section 575.402 - Delegation of authority(a) The head of an agency may pay a supervisory differential to a supervisor who is- (1) In a General Schedule position paid under 5 U.S.C. 5332 ; and(2) Responsible for providing direct, technical supervision over the work of one or more civilian employees whose positions are not under the General Schedule if the continuing pay (as determined under § 575.405(d) of this part) of one or more of the subordinates would, in the absence of such a differential, be more than the continuing pay (as determined under § 575.405(c) of this part) of the supervisor.(b) A supervisory differential may not be paid on the basis of supervising a civilian employee whose rate of basic pay exceeds the maximum rate of basic pay established for grade GS-15 on the pay schedule applicable to the GS supervisor, including a schedule for any applicable special rate under 5 CFR part 530 , subpart C; locality-based comparability payment under 5 CFR part 531 , subpart F; or similar payment or supplement under other legal authority.56 FR 20338, May 3, 1991, as amended at 57 FR 37394, Aug. 19, 1992; 58 FR 65537, Dec. 15, 1993; 61 FR 3543, Feb. 1, 1996; 70 FR 25751, May 13, 2005; 72 FR 67841, Dec. 3, 2007