5 C.F.R. § 9701.521
(a)
(b)
(1) Any negotiated grievance procedure referred to in paragraph (a) of this section must be fair and simple, provide for expeditious processing, and include procedures that—
(c) The preceding paragraphs of this section do not apply with respect to any matter concerning—
(e)
(f)
(3) Section 7121(f) of title 5, United States Code, is not waived, but is modified to provide that—
(g)
(h)
(4) For the purpose of this paragraph, an employee is considered to have elected one of the following, whichever election occurs first: