Post-retirement practice ban prohibits former tribunal members from practising before the tribunal and bars serving members from arbitration. Amendment to the Tribunal's service rules omits rules 13A-13D and inserts Rule 13E, barring the President, Senior Vice President, Vice President and Members from practising before the Tribunal after retirement, and Rule 13F, prohibiting those officeholders from undertaking arbitration work while serving on the Tribunal; the provisions take effect on publication in the Official Gazette and modify conditions of service.