Commercial transactions and contracts to be performed in Singapore
5.—(1)  A State is not immune as respects proceedings relating to —
(a)a commercial transaction entered into by the State; or
(b)an obligation of the State which by virtue of a contract (whether a commercial transaction or not) falls to be performed wholly or partly in Singapore,
but this subsection does not apply to a contract of employment between a State and an individual.
(2)  This section does not apply if the parties to the dispute are States or have otherwise agreed in writing; and subsection (1)(b) does not apply if the contract (not being a commercial transaction) was made in the territory of the State concerned and the obligation in question is governed by its administrative law.
(3)  In this section, “commercial transaction” means —
(a)any contract for the supply of goods or services;
(b)any loan or other transaction for the provision of finance and any guarantee or indemnity in respect of any such transaction or of any other financial obligation; and
(c)any other transaction or activity (whether of a commercial, industrial, financial, professional or other similar character) into which a State enters or in which it engages otherwise than in the exercise of sovereign authority.