The Nigerian 1999 Constitution clearly recognises and upholds the principle of the separation of power and the need to ensure that each arm of the government operates within the purview permitted by law. Thus, to ensure that each arm of government discharges its functions effectively, the Constitution or existing enactments further provide for their immunities and tenures of office of the members of the executive, legislature as well as the judiciary. The intention of this article is to critically examine from the legal angle the scope and extent of the immunities granted to office holders in the three arms of government as well as the security of their appointments.
Keywords: Constitution, Executive, Immunity, Judicial Officer, Legislature, Tenure of Office