4. Section 3 of the Principal Act is amended by omitting from subsection (1) the definition of “employer” and substituting the following definition:“‘employer' means a person who pays or is liable to pay wages and includes—
(a) the Territory or a Territory authority;
(b) a body, whether incorporated or not, established under a law of a State or another Territory, being a body that is resident, or carries on business, in the Territory; and
(c) a person who is an employment agent;”.