Constitution of the Federal Republic of Nigeria

Article 12, paragraph 1

No treaty between the Federation and any other country shall have the force of law to the extent to which any such treaty has been enacted into law by the National Assembly.

Constitution of the Federal Republic of Nigeria (Third Alteration) Act 2010

254 C - (1) Notwithstanding the provisions of sections 251, 257, 272 and anything contained in this Constitution and in addition to such other jurisdiction as may be conferred upon it by an Act of the National Assembly, the National Industrial Court shall have and exercise jurisdiction to the exclusion of any other court in civil causes and matters-

(…)

(h) relating to, connected with or pertaining to the application or interpretation of international labour standards;

(2) Notwithstanding anything to the contrary in this Constitution, the National Industrial Court shall have the jurisdiction and power to deal with any matter connected with or pertaining to the application of any international convention, treaty or protocol of which Nigeria has ratified relating to labour, employment, workplace, industrial relations or matters connected therewith.