Jamaica

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2. Subject to sections 18 and 49, and to subsections (9) and (12) of this section, and save only as may be demonstrably justified in a free and democratic society-
a. this Chapter¹³ guarantees the rights and freedoms set out in subsections (3) and (6) of this section and in sections 14, 15, 16 and 17; and
b. Parliament shall pass no law and no organ of the State shall take any action which abrogates, abridges or infringes those rights.
3. The rights and freedoms referred to in subsection (2) are as follows-
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h. the right to equitable and humane treatment by any public authority in the exercise of any function;
… (Sec. 13)

1. Subject to the provisions of section 134 of this Constitution, the law applicable to the grant and payment to any officer, or to his widow, children, dependants or personal representatives, of any pension, compensations, gratuity or other like allowance (in this section and in sections 133 and 134 of this Constitution referred to as an “award”) in respect of the service of that officer in a public office shall be that in force on the relevant day or any later law not less favourable to the person concerned.
… (Sec. 132)

1. Subject to subsection (4), the power to grant any award under any pensions law for the time being in force in Jamaica (other than an award to which, under that law, the person to whom it is payable is entitled as of right) and, in accordance with any provisions in that behalf contained in any such law, to withhold, reduce in amount or suspend any award payable under any such law is hereby vested in the Governor-General.
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3. In this section, “pensions law” means any law relating to the grant to any person, or to the widow, children, dependants or personal representatives of that person, of an award in respect of the services of that person in a public office, and includes any instrument made under any such law.
... (Sec. 134)