Poland - 1997 Constitution

Title Article 227
Chapter X - Public Finances
Article

227

(4) The President of the National Bank of Poland shall not belong to a political party, a trade union or perform public activities incompatible with the dignity of his office.   

Categories - Extra-parliamentary party (Members' compatibility)
Source Gisbert H. Flanz ed. 2004. Constitutions of the Countries of the World. Dobbs Ferry, New York: Oceana Publications.