The total service of an employee or Member is the full years and twelfth parts thereof, excluding from the aggregate the fractional part of a month, if any.

Credit may not be allowed for a period of separation from the service in excess of 3 calendar days.

employment as an employee, and any service as a Member (including the period from the date of the beginning of the term for which elected or appointed to the date of taking office as a Member), after December 31, 1986;

except as provided in subsection (f), service with respect to which deductions and withholdings under section 204(a)(1) of the Federal Employees’ Retirement Contribution Temporary Adjustment Act of 1983 have been made;

except as provided in subsection (f) or (h), any civilian service (performed before January 1, 1989, other than any service under paragraph (1) or (2)) which, but for the amendments made by subsections (a)(4) and (b) of section 202 of the Federal Employees’ Retirement System Act of 1986, would be creditable under subchapter III of chapter 83 of this title (determined without regard to any deposit or redeposit requirement under such subchapter, any requirement that the individual become subject to such subchapter after performing the service involved, or any requirement that the individual give notice in writing to the official by whom such individual is paid of such individual’s desire to become subject to such subchapter);

a period of service (other than any service under any other paragraph of this subsection and other than any military service) that was creditable under the Foreign Service Pension System described in subchapter II of chapter 8 1 of the Foreign Service Act of 1980, if the employee or Member waives credit for such service under the Foreign Service Pension System and makes a payment to the Fund equal to the amount that would have been deducted from pay under section 8422(a) had the employee been subject to this chapter during such period of service (together with interest on such amount computed under paragraphs (2) and (3) of section 8334(e));

a period of service (other than any service under any other paragraph of this subsection, any military service, and any service performed in the employ of a Federal Reserve Bank) that was creditable under the Bank Plan (as defined in subsection (i)), if the employee waives credit for such service under the Bank Plan and makes a payment to the Fund equal to the amount that would have been deducted from pay under section 8422(a) had the employee been subject to this chapter during such period of service (together with interest on such amount computed under paragraphs (2) and (3) of section 8334(e)); and

service performed by any individual as an employee paid from nonappropriated funds of an instrumentality of the Department of Defense or the Coast Guard described in section 2105(c) that is not otherwise creditable, if the individual elects (in accordance with regulations prescribed by the Office) to have such service credited under this paragraph.

If, after January 1, 1997, an employee or Member waives retired pay that is subject to a court order for which there has been effective service on the Secretary concerned for purposes of section 1408 of title 10, the military service on which the retired pay is based may be credited as service for purposes of this chapter only if the employee or Member authorizes the Director to deduct and withhold from the annuity payable to the employee or Member under this subchapter an amount equal to the amount that, if the annuity payment was instead a payment of the employee’s or Member’s retired pay, would have been deducted and withheld and paid to the former spouse covered by the court order under such section 1408. The amount deducted and withheld under this paragraph shall be paid to that former spouse. The period of civil service employment by the employee or Member shall not be taken into consideration in determining the amount of the deductions and withholding or the amount of the payment to the former spouse. The Director of the Office of Personnel Management shall prescribe regulations to carry out this paragraph.

An employee or Member who has received a refund of retirement deductions under subchapter III of chapter 83 with respect to any service described in subsection (b)(2) or (b)(3) may not be allowed credit for such service under this chapter unless such employee or Member deposits an amount equal to 1.3 percent of basic pay for such service, with interest. A deposit under this paragraph may be made only with respect to a refund received pursuant to an application filed with the Office before the date on which the employee or Member first becomes subject to this chapter.

An employee or Member may not be allowed credit under this chapter for any service described in subsection (b)(3) for which retirement deductions under subchapter III of chapter 83 have not been made, unless such employee or Member deposits an amount equal to 1.3 percent of basic pay for such service, with interest.

Interest under paragraph (1) or (2) shall be computed in accordance with paragraphs (2) and (3) of section 8334(e) and regulations prescribed by the Office.

For the purpose of survivor annuities, deposits authorized by the preceding provisions of this subsection may also be made by a survivor of an employee or Member.

served in a position in which the employee was excluded from coverage under this subchapter because the employee was covered under a retirement system established under section 10 of the Federal Reserve Act; and

transferred without a break in service to a position to which the employee was appointed by the President, with the advice and consent of the Senate, and in which position the employee is subject to this subchapter,

The Office shall accept the certification of the President of the Senate (or the President’s designee) or the Speaker of the House of Representatives (or the Speaker’s designee), as the case may be, concerning the service of, and the amount of compensation received by, an employee with respect to whom credit is to be sought under this subsection.

An individual shall not be granted credit for such service under this subsection if eligible for credit under section 8332(m) for such service.

 3 The Office of Personnel Management shall accept, for the purposes of this chapter, the certification of the head of a nonappropriated fund instrumentality of the United States concerning service of the type described in subsection (b)(6) that was performed for such nonappropriated fund instrumentality.

Service credited under subsection (b)(6) may not also be credited under any other retirement system provided for employees paid from nonappropriated funds of a nonappropriated fund instrumentality.

Notwithstanding any other provision of this chapter, the service of an individual finally convicted of an offense described in paragraph (2) shall not be taken into account for purposes of this chapter, except that this sentence applies only to service rendered as a Member (irrespective of when rendered). Any such individual (or other person determined under section 8424(d), if applicable) shall be entitled to be paid so much of such individual’s lump-sum credit as is attributable to service to which the preceding sentence applies.

An individual convicted of an offense described in paragraph (2) shall not, after the date of the final conviction, be eligible to participate in the retirement system under this chapter while serving as a Member.

Regulations to carry out clause (i) of paragraph (4)(B) shall include provisions to ensure that the authority to make any payment under such clause to the spouse or children of an individual shall be available only to the extent that the application of such clause is considered necessary and appropriate taking into account the totality of the circumstances, including the financial needs of the spouse or children, whether the spouse or children participated in an offense described in paragraph (2) of which such individual was finally convicted, and what measures, if any, may be necessary to ensure that the convicted individual does not benefit from any such payment.