12.— (1) Any provision of an agreement (whether a contract of employment or not, and whether made before, on or after the coming into operation of this Act) that purports to prohibit or restrict the conclusion by a hirer with an agency worker, assigned to work for that hirer, of a contract of employment after the assignment concerned has concluded shall be void.

(2) Subsection (1) shall not operate to prevent an employment agency from obtaining reasonable recompense from a hirer for services rendered by the employment agency to the hirer in respect of the recruitment, training and assignment of an agency worker who is subsequently employed by the hirer under a contract of employment.