45 CFR § 1176.5 - Annual plan.
(a) An agencywide plan for promoting part-time employment opportunities will be developed annually. This plan will establish annual goals and set interim and final deadlines for achieving these goals. This plan will be applicable throughout the agency, and will be transmitted to the Office of Personnel Management with the required report to OPM on the status of the program as of September 30 of each year.
(b) Beginning in FY 1981 in administering personnel ceilings, part-time career employees shall be counted against ceiling authorizations as a fraction. This will be determined by dividing 40 hours into the average number of hours of such employee's regularly scheduled workweek.