This section sets forth the administrative and substantive responsibilities of the Division Directors, Office Heads, Regional Directors, and certain other Commission officers. All Commission officers and other staff members, except administrative law judges and the Inspector General, shall perform, in addition to the duties herein set forth, such additional duties as the chairman of the Commission may assign from time to time. These officers also serve as liaison with Government and other agencies concerning matters within their respective functional responsibilities. [37 FR 23826, Nov. 9, 1972, as amended at 59 FR 5943, Feb. 9, 1994; 60 FR 14624, Mar. 20, 1995; 73 FR 32223, June 5, 2008]