D.C. Mun. Regs. tit. 6, r. 6-B1112
An agency classification action is a determination to establish or change the title, series, grade or pay system of a position based on application of published position classification standards or guides.
The effective date of a classification action taken by an agency shall be the date an official with properly delegated authority approves (certifies) the proposed classification. This is accomplished when the authorized official(s) signs the allocation of the position.
The effective date of a classification action may be extended to correspond with the effective date of the personnel action when -
A classification action shall be implemented by a personnel action which must occur within a reasonable period of time following the date of the classification action, except as provided in this chapter.
If the classification action taken by an agency requires a personnel action which will result in a loss of rank, grade or pay to the occupant of the position, the agency must advise the employee, in writing, of the position action and the proposed date of the personnel action. This notice shall be issued prior to taking a personnel action, in accordance with the notice requirements for reduction in force for employees appointed on or before December 31, 1979; or the notice requirements for adverse actions for employees appointed after that date.
Except as provided in sections 1113 through 1116, classification actions shall not be made retroactive.
D.C. Mun. Regs. tit. 6, r. 6-B1112