Pensions and Social Security Payments
(1) Subject to the provisions of paragraph (2) of Article 19, pensions and other similar remuneration paid to a resident of a Contracting State in consideration of past employment shall be taxable only in that State.
(2) The provisions of paragraph (1) shall not apply if the recipient is not subjected to taxation in respect of such income in the State of which he is a resident and according to the laws of that State. In such case such income shall be taxable in the State in which it arises.
(3) Notwithstanding the provisions of paragraph (1), pensions and other similar remuneration paid under provisions of the social security legislation of a Contracting State shall be taxable only in that State.