60 No. 2 of 2016] Constitution of Zambia (Amendment) (b) the Deputy President of the Constitutional Court is acting as President of the Constitutional Court; or (c) the Deputy President of the Constitutional Court is for a reason unable to perform the functions of that office. Appointment of judges 140. The President shall, on the recommendation of the Judicial Service Commission and subject to ratification by the National Assembly, appoint the— (a) Chief Justice; (b) Deputy Chief Justice; (c) President of the Constitutional Court; (d) Deputy President of the Constitutional Court; and (e) other judges. Qualification for appointment as judge 141. (1) A person qualifies for appointment as a judge if that person is of proven integrity and has been a legal practitioner, in the case of the— (a) Supreme Court, for at least fifteen years; (b) Constitutional Court, for at least fifteen years and has specialised training or experience in human rights or constitutional law; (c) Court of Appeal, for at least twelve years; or (d) High Court, for at least ten years. (2) A person appointed as judge to a specialised court shall have the relevant expertise, as prescribed. Tenure of office of judge 142. (1) A judge shall retire from office on attaining the age of seventy years. (2) A judge may retire, with full benefits, on attaining the age of sixty-five years. (3) The Chief Justice and President of the Constitutional Court shall hold office for not more than ten years and may, thereafter, continue as a judge of the Supreme Court or Constitutional Court, subject to clause (1). (4) A judge who has retired is not eligible for appointment as a judge.