5 CFR 351.402 - Competitive area.
(b) A competitive area must be defined solely in terms of the agency's organizational unit(s) and geographical location and, except as provided in paragraph (e) of this section, it must include all employees within the competitive area so defined. A competitive area may consist of all or part of an agency. The minimum competitive area is a subdivision of the agency under separate administration within the local commuting area.
(c) When a competitive area will be in effect less than 90 days prior to the effective date of a reduction in force, a description of the competitive area shall be submitted to the OPM for approval in advance of the reduction in force. Descriptions of all competitive areas must be made readily available for review.
(d) Each agency shall establish a separate competitive area for each Inspector General activity established under authority of the Inspector General Act of 1978, Public Law 95-452, as amended, in which only employees of that office shall compete for retention under this part.
(e) When an agency finds that a competitive area defined under paragraph (b) of this section includes pay band positions and positions not covered by a pay band, the agency may, at its discretion, define a separate (and additional) competitive area, otherwise consistent with paragraph (b) of this section, to include only pay band positions. The original competitive area would then include only the remaining positions (i.e., those positions not covered by a pay band).