Article 13 All Officials
As from the date on which the Organisation has established a social security scheme, which the Secretary of State considers to provide adequate benefits, officials employed by the Organisation shall enjoy exemptions whereby for the purposes of the enactments relating to social security, including enactments in force in Northern Ireland—
(a)
services rendered for the Organisation by them shall be deemed to be excepted from any class of employment in respect of which contributions under those enactments are payable, but
(b)
no person shall be rendered liable to pay any contribution which he would not be required to pay if those services were not deemed to be so excepted.