A person's enrollment in the 457(b) Plan shall terminate when one (1) of the following occurs:
A participant who ceases to be eligible to participate in the 457(b) Plan, but who remains an employee of the District, shall be entitled to withdraw all of the funds from his or her account upon termination of employment.
D.C. Mun. Regs. tit. 6, r. 6-B2619