D.C. Mun. Regs. tit. 8-B, § 1807
1807.1 The President and each vice president shall determine the positions which comprise the competitive level in which employees shall compete with each other for retention.
1807.2 Assignment to a competitive level shall be based upon the employee's position of record for which the employee receives pay .
1807.3 A competitive level shall consist of all positions in a work unit with the same title and grade level.