(1) An employer shall not penalise an employee -

(a) for invoking any right of the employee to be treated, in respect of the employee's conditions of employment, in the manner provided for by this Part, or

(b) for having in good faith opposed by lawful means an act which is unlawful under this Act, or

(c) for refusing to accede to a request by the employer to transfer from performing -

(i) full-time work to performing part-time work, or

(ii) part-time work to performing full-time work,

or

(d) for giving evidence in any proceedings under this Act or giving notice of his or her intention to do so or to do any other thing referred to in paragraph (a), (b) or (c).

(2) For the purposes of this section, an employee is penalised if he or she -

(a) is dismissed, suffers any unfavourable change in his or her conditions of employment or any unfair treatment (including selection for redundancy), or

(b) is the subject of any other action prejudicial to his or her employment,