4. Any provision in a contract of employment or other agreement between an employer and an employee is void in so far contracts as it –
(a) purports to exclude any provision of this Act, including an agreement to refrain from instituting or continuing any proceedings under this Act or any proceedings for breach of contract; or
(b) purports to preclude the employee or has the effect of discouraging the employee, from making a protected disclosure.
Referenced Legislation: Public Interest Disclosures Act (2010)