(a) During the period in which the Chairman or the other members serve on the Board, they shall be subject to the Department's regulations governing ethics and conduct set forth at 20 CFR part 0.

(b) Notice of any objection which a party may have to any Board member who will participate in the proceeding shall be made by such party at the earliest opportunity. The Board member shall consider such objection and shall, in his or her discretion, either proceed with the case or withdraw.