8. General exclusions
(1) An individual does not carry on a controlled activity if he carries on an activity solely as an employee who is employed or appointed under a contract of service.
(2) A person does not carry on a controlled activity to the extent that he exercises a power or performs a duty or function —
(a) of a public nature;
(b) on behalf of a public authority; or
(c) in connection with public administration, law enforcement, government or regulation.