D.C. Mun. Regs. tit. 6-B, § 2603
2603.1 Eligible employees (employees who are first employed in the District after September 30, 1987, in a benefit-eligible position in a covered employment as defined in § 2699 and who are not excluded from participation by law or regulation) are covered under the 401(a) Plan.
2603.2 The personnel authority shall enroll each eligible employee into the 401(a) Plan as a participant at the beginning of the first pay period immediately following the employee's completion of one (1) year of creditable service, provided the employee first completes the 401(a) Plan enrollment forms.
2603.3 A participant shall have a vested interest in his or her benefits in the 401(a) Plan as outlined in § 2605.1.
2603.4 A participant who ceases to be an eligible employee but remains employed with the District, shall resume participation in the 401(a) Plan on the first day of the first pay period that commences after he or she resumes service as an eligible employee.
2603.5 The Administrator shall suspend the participation in the 401(a) Plan of any participant who separates from service for more than three (3) workdays in accordance with the 401(a) Plan Document. The participant shall resume participation in the 401(a) Plan if reinstated, restored to duty or reemployed by the District in accordance with §§ 2603.7, 2603.8, or 2603.9. If a participant is not reemployed with the District within one (1) year of separation, except as provided in §§ 2603.8 and 2603.9, he or she shall be terminated from participation in the 401(a) Plan pursuant to § 2603.6 and his or her inactive account shall be forfeited and disposed of pursuant to § 2606.8.
2603.6 The Administrator shall terminate the participation in the 401(a) Plan for:
(a) Each participant who does not have a vested interest in his or her benefits in accordance with § 2605.1 and who is separated from service for more than one (1) year, unless the participant is reemployed by the District in accordance with §§ 2603.8 or 2603.9; and
(b) Each participant or former participant who has a vested interest in his or her benefits in accordance with § 2605.1, or his or her beneficiary, upon receipt of all benefits in his or her active or inactive account.
2603.7 A participant in the Plan who is removed or suspended without pay and later reinstated or restored to duty on the grounds that the removal or suspension was unwarranted or unjustified, shall be entitled to immediately resume accruing creditable service for purposes of vesting in the 401(a) Plan, or to resume par
ticipation in the 401(a) Plan, whichever is applicable, and to receive any creditable service which otherwise would have been credited pursuant to §§ 2604.1, 2604.2, and 2604.3. Appropriate increases shall be made in the Trust to reflect the District contributions that would have been made had the employee not been removed or suspended.
2603.8 A former employee who is reemployed by the District within one (1) year of the date of separation shall resume participation in the 401(a) Plan immediately, without a loss of prior creditable service or forfeiture of any contributions and income allocated to his or her basic contribution account, during that period of separation from service. If a vested participant receives any or all his or her benefits during the separation from service, then he or she shall be vested only for the following amounts upon reemployment:
2603.9 Except as provided in § 2603.7, a participant, whether or not his or her interest in benefits has vested, who is reemployed by the District after a separation from service for more than one (1) year, must satisfy the requirements of §§ 2603.1 and 2603.2 to become eligible to participate in the 401(a) Plan, and must also satisfy the requirements of § 2605.1 to become vested in the 401(a) Plan with respect to any contributions and income allocated to his or her basic contribution account after such reemployment. If an employee has met the vesting schedule requirements in accordance with § 2605.1 prior to the separation from service, then he or she shall remain vested as to any remaining benefits, and income thereon, in his or her basic contribution account at the time of such reemployment.
2603.10 The following types of employment are “non-covered employment” for purposes of the 401(a) Plan:
is held by a patient or a resident in a hospital, home, or penal or mental institution of the District;
2603.11 Each participant's account shall be charged with its proportionate share of any expenses paid from the 401(a) Plan and shall also include any functional subaccounts as may be established by the Administrator from time to time. To the extent that the Administrator determines that a functional subaccount no longer needs to be maintained, such functional subaccount may be combined with another functional subaccount. The functional subaccounts are as follows: (1) Basic Contribution Account or (2) Rollover Contribution Account.
SOURCE: Final Rulemaking published at 37 DCR 954 (February 2, 1990); as amended by Final Rulemaking published at 38 DCR 2130 (April 12, 1991); as amended by Final Rulemaking published at 67 DCR 4743 (May 1, 2020).