(1) Subject to this section, nothing in this Act shall prevent any employer, worker or other person to whom this Act applies from enforcing his rights or remedies in respect of any breach or non-performance of any lawful contract made outside Nigeria, and the rights of the parties under such a contract (both against each other and against third parties invading those rights) may be enforced in the same manner as other rights arising outside Nigeria may be enforced and as if this Act had not been made.
(2) Whenever a contract made outside Nigeria has been executed in conformity with this Act, it shall be enforced in the same manner as a contract entered into under this Act.
(3) A written contract made outside Nigeria which has been executed otherwise than in conformity with this Act shall not be enforced against a worker to whom this Act applies if he is unable to read and understand the language in which the contract is written.
(4) For the purposes of this section, a contract shall be deemed to be executed in conformity with this Act if it is signed by the names or marks of the parties and bears an attestation to the effect that the contract was read over and explained to the parties in the presence of the person attesting and was entered into by the parties voluntarily and with full understanding of its meaning and effect.
(5) The attestation referred to in subsection (4) of this section may be made by any Nigerian official entitled to act under section 12 of the Oaths Act or by any judicial or other authority authorized by the law of the place where the contract was made to exercise the functions of a notary public or equivalent functions.
Section 87 of the Labour Act in Nigeria