1987 Constitution of the Philippines
Section 2. No member of a Constitutional Commission shall, during his tenure, hold any other office or employment. Neither shall he engage in the practice of any profession or in the active management or control of any business which, in any way, may be affected by the functions of his office, nor shall he be financially interested, directly or indirectly, in any contract with, or in any franchise or privilege granted by the Government, any of its subdivisions, agencies, or instrumentalities, including government-owned or controlled corporations or their subsidiaries.