((a)) Each member of the Board and the General Counsel of the Board shall be eligible for reappointment, and shall not engage in any other business, vocation, or employment. The Board shall appoint an executive secretary, and such attorneys, examiners, and regional directors, and such other employees as it may from time to time find necessary for the proper performance of its duties. The Board may not employ any attorneys for the purpose of reviewing transcripts of hearings or preparing drafts of opinions except that any attorney employed for assignment as a legal assistant to any Board member may for such Board member review such transcripts and prepare such drafts. No administrative law judge’s report shall be reviewed, either before or after its publication, by any person other than a member of the Board or his legal assistant, and no administrative law judge shall advise or consult with the Board with respect to exceptions taken to his findings, rulings, or recommendations. The Board may establish or utilize such regional, local, or other agencies, and utilize such voluntary and uncompensated services, as may from time to time be needed. Attorneys appointed under this section may, at the direction of the Board, appear for and represent the Board in any case in court. Nothing in this subchapter shall be construed to authorize the Board to appoint individuals for the purpose of conciliation or mediation, or for economic analysis.
((b)) All of the expenses of the Board, including all necessary traveling and subsistence expenses outside the District of Columbia incurred by the members or employees of the Board under its orders, shall be allowed and paid on the presentation of itemized vouchers therefor approved by the Board or by any individual it designates for that purpose.