((a)) ** Full salary in lieu of annuity; contributions to Fund; resumption of annuity with cost-of-living adjustment** Any annuitant recalled to duty in the Service under shall, while so serving, be entitled in lieu of annuity to the full salary of the class in which serving. During such service the recalled annuitant shall make contributions to the Fund in accordance with . On the day following termination of the recall service, the former annuity shall be resumed, adjusted by any cost-of-living increases under that became effective during the recall period.section 3948(a) of this titlesection 4045 of this titlesection 4065 of this title

((b)) ** Refund of contributions to Fund; election for supplemental annuity or determination of annuity anew; prior service counted as recall service** If the recall service lasts less than one year, the contributions of the annuitant to the Fund during recall service shall be refunded in accordance with . If the recall service lasts more than one year, the annuitant may, in lieu of such refund, elect a supplemental annuity computed under on the basis of service credit and average salary earned during the recall period irrespective of the number of years of service credit previously earned. If the recall service continues for at least 5 years, the annuitant may elect to have his or her annuity determined anew under in lieu of any other benefits under this section. Any annuitant who is recalled under may upon written application count as recall service any prior service that is creditable under that was performed after the separation upon which his or her annuity is based.section 4055 of this titlesection 4046 of this titlesection 4046 of this titlesection 3948 of this titlesection 4056 of this title

((c)) ** Annuitant subject to Foreign Service Pension System** If an annuitant becomes subject to part II of this subchapter by reason of recall service—

((1)) subsections (a) and (b) shall not apply to such annuitant; and

((2)) shall apply to the recall service as if such service were reemployment.